Features of MSC · MSC.Marc provides unique capabilities for deformable-to-deformable contact that...

The World Leader in Nonlinear andCoupled Physics Simulation

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enterpriseMSC.visualNastran


MSC.Software Corporation, the world leader in nonlinearand coupled physics simulation, introduces you toMSC.Marc, an integrated member of the MSC.visualNastranEnterprise family. MSC.Marc has been known since 1971for its versatility in helping market leaders to design betterproducts, and solve simple to complex real-worldengineering problems.

Today, MSC.Marc has evolved and matured throughconstant development and worldwide use by thousands ofengineers. Please read on to discover how its manycapabilities will enable you to solve the most challengingnonlinear and coupled physics problems.

Element TTechnology

Solution PProcedures

Parallel PProcessing

Mesh AAdaptivity

Automated CContact AAnalysis

Metallic MMaterials

Nonmetallic MMaterials

Cyclic SSymmetry

Heat TTransfer

Automated RRemeshing aand RRezoning

Interactive NNonlinear

Failure AAnalysis

Nonstructural AAnalysis

Interactive IInterpretation oof NNonlinear AAnalysis

Mesh GGeneration

Support SServices

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Table oof CContents


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With over 150 finite element types, MSC.Marc can be used torepresent any geometry. These elements are modern, accurateand robust, and may be used with virtually all of MSC.Marc’sanalysis capabilities. There is no practical limit to the number ofelements or the number of element types allowed in the analysis.The elements include lower-order and higher-order triangles andquadrilaterals for 2-D analysis, or tetrahedron and hexahedron for3-D analysis. Both conventional integration, and reducedintegration (with hourglass control) options are available. Many ofthe elements have been enhanced to use an assumed strain,mixed method, or constant dilatation formulation, which exhibitssuperior behavior over conventional isoparametric elements inmany applications. Special elements are also available formodeling incompressible and nearly incompressible behavior.Lower-order triangular and tetrahedral elements have recentlybeen added to the arsenal that may be applied to incompressiblematerials. These elements can be used with conventionalelasticity, Mooney, Ogden, and other large-strain elastomermodels. The shell element capability is especially strong, withboth thick and thin shell formulations. All shell elements can beused in conjunction with the composite capability. The definition ofply orientations, material properties, and failure criteria may bespecified easily through the thickness of the shell.

The composite capability also exists for continuum elements. Formodeling of fiberous composites, the rebar elements can be used.

The MMSC.Marc EElement LLibrary

• Trusses• Shells (thick, thin, and axisymmetric)• Membranes• Plane Stress• Generalized Plane Strain• 3-D Solids• Gaps• Rebar• Semi-Infinite• Beams (solid, open, and closed section)• Plates• Plane Strain• Axisymmetric Solids• Incompressible• Pipe Bends• Cables• Composite

MSC.Marc also has the ability to transform the results from a 2-Daxisymmetric analysis to a 3-D analysis. The first stage has initiallyaxisymmetric geometry and loading. The second stage can involveasymmetric loading and, hence, be fully three-dimensional. Largesavings in computational costs can be obtained with thisprocedure.

3-DD TTetrahedral EElement

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Complex 3-D nonlinear analysis was a dream only a few years ago.With MSC.Marc, it is now a production reality. MSC.Marc uses thelatest proven numerical analysis techniques to provide the fastest,most accurate results possible. All calculations are performed indouble precision. The optimal computation algorithm is availablefor a large spectrum of analysis capabilities.

Large deformation behavior can be represented using severalformations including:

• Lagrangian• Eulerian• Total and Updated Lagrangian• Total and Updated Eulerian

Transient analysis problems can be solved using a variety of timeintegration procedures. Nonlinear systems are solved with minimalcomputation costs using one of the following strategies:

• Newton (Full or Quasi)• Implicit or Explicit Dynamics• Adaptive Load Stepping

The adaptive load capability moderates the load to assureconvergence and stability. It can be used for a variety of analysistypes including structural, dynamic, creep, and thermal. Severalcriteria are available to control the load step size. For problemsinvolving instability or buckling, arc-length strategies are available.

The efficient solution of the system of linear equations isat the core of the MSC.Marc program. Problems of500,000 degrees of freedom are routinely solved onmodern workstations. The following solution techniquesare available:

Direct mmethods (Profile, sparse, or multifrontal sparse)

• symmetric• nonsymmetric• complex

Iterative MMethods (sparse storage)

• symmetric• preconditioned conjugate gradient

Working with our hardware partners, MSC.Marc utilizes the latestsoftware technology to take advantage of hardware advancesincluding parallel processing architectures.

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MSC.Marc uses parallel processing capability to solve very largescale models. The enabling technology is based on domaindecomposition methodology and is available on shared anddistributed memory machines as well as a cluster of workstationsfor UNIX, NT, and Linux operating systems. The MPI protocol isused for communication between different domains. Theimplementation offers a highly scalable solution with nearly linearand super linear speed improvement on the dedicated machines.Most features of MSC.Marc are available within the parallel framework.

Fine thread rolling benchmark:

There are 76800 elements and 233523 degrees of freedom inthis model. The table shows analysis wall times and scalabilitynumbers for the fine thread rolling benchmark with MSC.Marc2001 on a representative platform.

CPU Wall Time Scalability1 66159.14 1.02 32371.70 2.04 16198.24 4.08 7852.56 8.416 4531.77 14.6

Fine TThread RRolling

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MMeesshh AAddaappttiivviittyy

MSC.Marc’s easy to use, powerful adaptive meshing proceduresimprove accuracy while reducing overall computational cost.

MSC.Marc provides an adaptive meshing capability for both linearand nonlinear analysis. In linear problems, the mesh is repetitivelyenriched until the error criteria are satisfied. Over 10 differentcriterion can be used simultaneously. When geometric informationis available, such as the boundary curves or surface definition, theadaptive meshing feature uses this information, which results in ageometrically precise mesh. The adaptive meshing technology canbe used with the linear order triangular, tetrahedral, quadrilateral,brick continuum, and shell elements. Also, the mesh canautomatically unrefine, in areas where the refinement is no longerneeded, to keep the model computationally inexpensive.

Plasticity

For plasticity problems, the adaptive meshing technique can beused to its advantage, to enrich the mesh in areas where materialnonlinearity occurs.

Welding

In welding analysis, the adaptive meshing process can be used toimprove the solution in the region of high thermal gradients.

Contact

For contact problems, the mesh is automatically enriched toimprove the precision in the contact region.

Moving BBoundary

For many moving boundary problems such as rolling andextrusion, it is possible to enrich the mesh in a particular regionand have the mesh return to the original refinement at a later stage.

Design SSensitivity aand OOptimization

MSC.Marc performs design sensitivity and sizing optimization forlinear structural analysis. Design variables include:

• Shell thickness• Beam area and moments of inertia• Young’s modulus• Poisson’s ratio• Mass density

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MSC.Marc has the world’s most advanced capabilities to modelcontact between bodies. This allows for the automated solution ofcontact problems where contact occurs between a deformablebody and a rigid body, or between multiple deformable bodies.Deformable bodies are simply a collection of elements, and rigidbodies are a collection of geometric entities. These geometricentities are curves or surfaces defined using a variety ofgeometric descriptions, including NURBS (Non-Uniform Rational B-Splines. Being a collection of elements, the surfaces ofdeformable bodies are faceted. These facets maybe representedusing analytical surface descriptions. Rigid bodies can be subjectto any arbitrary motion using either displacement, velocity or forcecontrol. Furthermore, contact bodies may also be glued to eachother to simulate situations like rigid grips on a deformable tensilespecimen or joining dissimilar meshes. This easy definition ofcontact distinguishes MSC.Marc from other FEA codes claiming tosolve contact problems. During contact, MSC.Marc automaticallydetermines the displacement constraints of contact. You no longerneed to specify where bodies will come into contact or the natureof the contact unlike other FEA codes that require special"interface" or "gap" elements to be placed between nodes onbodies suspected of possible contact. The load step size isautomatically adjusted to satisfy convergence and contactconditions. Large deformations, material nonlinearities are allowedduring contact as well as friction. Coulomb and shear frictionmodels are available. Furthermore, you may customize a frictionmodel to suit your own application, such as adding temperaturedependence to the friction coefficient in metal formingapplications, or pressure dependent friction coefficient in rubbersealing applications. Self-contact and interference fit analyses arealso available.

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MSC.Marc provides unique capabilities for deformable-to-deformablecontact that improve the accuracy, even for coarse meshes. The contact capability can be used for either statics or dynamicswith or without coupled thermal stress with virtually all of theMSC.Marc elements.

MSC.Marc CContact CCapabilities

• Automated analysis procedure• Static, dynamic, and thermal contact• Deformable-to-rigid contact, deformable-to-deformable

contact• Self-contact• Coulomb, shear, or user-defined friction laws• Interference fit• Delayed slide-off• Stress free contact

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MSC.Marc can represent material behavior beyond the yieldstress, which distinguishes elastic from plastic behavior. Thesecomplex models can be used both for traditional metals, such assteel, aluminum and copper, and non-traditional metals, such aspowder and “super plastic” metals. All of the material models canbe used in conjunction with any of the finite elements to providemaximum flexibility to the analyst. The material parameters can betemperature-dependent and/or allow for anisotropic behavior. Rate-dependent material behavior can be modeled using a varietyof approaches. For large strain plasticity analysis, which isencountered in manufacturing simulation, MSC.Marc provides foreither the traditional additive decomposition of strain, or themodern multiplicative decomposition (FeFp ) formulation. A state-of-the-art numerical implementation is used to ensureaccuracy, stability, and computational efficiency.

MSC.Marc PPlasticity CCapabilities

• User-defined associative flow law• Von Mises yield criterion• Drucker-Prager or Mohr-Coulomb yield criterion• Gurson damage model• Anisotropic plasticity• Temperature- and rate-dependent yield function• Powder metallurgy model (for hot isostatic

pressing process)• Isotropic hardening• Kinematic hardening• Combined hardening• Oak Ridge National Lab cyclic plasticity model• Work/strain hardening• Strain rate effects• Temperature effects• Viscoplasticity

Several analytical models exist for plasticity to model work harding:

• Additive Power Law• Multiplicative Power Law• Johnson-Cook• Cowper-Symonds• Kumar

Special formulations exist to model rigid-plasticity andsuperplasticity.

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Engine gaskets are used to seal metal parts of the engine to, forexample, prevent steam or gas from escaping. They are complex(often multi-layer) components, usually rather thin and typicallymade of several different materials of varying thickness. Thegaskets are carefully designed to have a specific behavior in thethickness direction. This is to ensure that the joints remain sealedwhen the metal parts are loaded by thermal or mechanical loads.

The new GASKET material model addresses various problems byallowing gaskets to be modeled with only one element through the thickness.

CContact4


Composite MMaterials

For thin structures, shell elements may utilize composite materials,while for conventional structures, the brick elements may utilizecomposite materials. In such structures, each ply may havedifferent material properties, or even different material laws. Plylay-ups may be easily defined for both the orientation andthickness. MSC.Marc provides standard failure criteria, such asmaximum stress or strain, Tsai-Wu, Hoffman, and Hill, that willassist you in verifying the design. You can also use MSC.Marc tosimulate progressive failure.

Rubber MMaterials

MSC.Marc offers two approaches to modeling nonlinear elasticmaterial behavior. A user-supplied material model can beimplemented through the hypoelastic option. Incompressible andnearly incompressible behavior can be modeled using either thegeneralized Mooney-Rivlin, Ogden, Arruda-Boyce, or Gent strainenergy function. MSC.Marc Mentat, MSC.Marc’s dedicatedgraphical user interface, will assist you in evaluating the materialparameters given the experimental data. All the elastomericmaterial models may include a viscoelastic component for thelarge-strain, rate-dependent analysis of elastomers. A damagestrain model also may be used to represent the failure of thesematerials. A foam model is available to treat materials where largevolumetric compressible elastic strains occur. These models maybe used either in the total or in updated Lagrange framework.

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A special set of tying constraints for continuum elements can beautomatically generated by the MSC.Marc program to effectivelyanalyze structures with a geometry and a loading varyingperiodically about a symmetry axis. As shown on the next page,the complete structure is given. However, due to periodicrepetition, a sector can be modeled by taking advantage of thecyclic symmetry of the structure which gives results equivalent tothe full model. This feature can result in substantial saving ofcomputer time.

The experimentally or analytically determined complex pressure-closure relationship in that direction is used directly as input forthe material model.

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In recent years, the use of nonmetallic materials has becomewidespread in engineering design. These materials range fromconcrete used in civil engineering to polymers used in biomedicalapplications. MSC.Marc has an extensive material library which canbe used to represent the behavior of these nonmetallic materials.The material models and typical applications include:

Material MModel Applications CharacteristicsComposite MMaterials aerospace, linear elastic(including failure criteria) automotive

Hypoelastic polymers, nonlinear elasticbiological materials

Generalized MMooney, tires, gaskets, nonlinear elasticOgden, AArruda-GGoyce, dampers, Gent. incompresible

Foam seats large-compressionnonlinear elastic

Mohr-CCoulomb ice, wood, soil, pressureconcrete dependent yield

Cam-CCay soils, offshore critical state model

Viscoelastic glass, polymers rate-dependentelastic behavior

Cracking concrete tension-inducedcracking,compression induced crushing

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The solution to thermal problems is crucial in many engineeringproblems. It is the first step in performing thermal stress analysis.MSC.Marc has the capability to model any geometric region withelements which permit the temperature data to be directlytransferred to the structural analysis. Either a fixed time-steppingor an adaptive time-stepping procedure can be used. As a steady-state condition is approached, the time steps will increase;whereas if material properties or boundary conditions changerapidly, time steps will decrease. Either a steady-state or transientanalysis can be performed. The material can be temperature-dependent and isotropic, orthotropic or anisotropic. Latent heatinduced by phase changes can be included. Time-dependentboundary conditions can be prescribed, such as temperatures,fluxes, convection, or radiation. Unique capabilities are availablefor gaps and cooling passages. A coupled electrostatics-heattransfer analysis, which incorporates the Joule heating generatedby material resistivity is available. Additional capabilities exist inMSC.Marc for performing coupled thermal-mechanical analysis,where the change in contact conditions results in a change in thethermal boundary conditions. These temperature dependentcontact conditions are handled automatically.

MSC.Marc also provides a capability to simulate fluid flow, andcoupled fluid-thermal behavior. In such problems, the fullyconvective-conductive simulation is performed. The fluid isconsidered to be incompressible, single phase, and without turbulence.

MSC.Marc HHeat TTransfer CCapabilities

• Steady-state and transient• Temperature-dependent material properties• Latent heat effects• Coupled Joule heating• Coupled thermal-mechanical analysis• Coupled fluid/thermal analysis• Uncoupled mechanical (easy data transfer)• Fixed or adaptive time-stepping• Convection, radiation boundary conditions• Mass transport

Calculation oof VView FFactors

MSC.Marc Mentat provides a sophisticated capability for thecalculation of the view factors required in a radiation simulation. An accelerated Monte Carlo approach is used, which providesaccurate results for any 2-D or 3-D geometry including symmetry conditions.

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In the analysis of metal or rubber, the material deforms from someinitial (often simple) shape, to a final, very often complex shape.During this process, the deformation can become so large, thatthe mesh, which is used to represent the material, may becomehighly distorted. This distortion of the mesh leads to a loss inaccuracy, and in some programs, a failure of the analysis. TheMSC.Marc products provide the solution to this problem bygenerating a new mesh, automatically (remeshing) and transferringthe solution from the old mesh to the new mesh (rezoning).

CCyclic SSymmetry

Heat TTransffer

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With the widespread availability of fast workstations rich 3-Dgraphics capabilities, visualization of the finite element model hasnever been easier. MSC.Marc Mentat takes advantage of theselatest graphics advances and offers you features such as lightsource shading and translucency.

The mesh generators in MSC.Marc Mentat and MSC.Patran areboth powerful and intuitive. The mesh can be generated directly,or derived from NURBS geometry. Planar and shell structures canbe easily transformed to solid meshes. Models can be easilyedited using the mouse, in any coordinate system. CAD geometryand finite element data can be imported from leading modelingsystems, and then edited.

A variety of tools are available for selecting the portion of themodel which is of interest. The validity of the finite element modelcan be verified using either graphical techniques, or by checkingthe distortions.

MSC.Patran and MSC.Marc Mentat help you build a completeloadcase description for nonlinear FEA. Material properties andboundary conditions applied to the geometry are automaticallyassociated with the finite element mesh. Complete descriptions ofmaterials such as metals, elastomers, and composites can bespecified, including temperature and work hardening effects. Rigidsurfaces and their motions can be defined to make contactanalysis easy.

An analysis job can be initiated, monitored, and controlled withinMSC.Marc Mentat or MSC.Patran. Model checking is automatic.Multiple analysis jobs can be performed simultaneously. In fact,you can submit and monitor as many jobs as desired. MSC.Patrancan take advantage of the MSC.Patran Analysis Manager whichprovides much of the same functionality for managing analysis jobs.

Based upon the remeshing criteria selected, new meshes arecreated on individual bodies during the nonlinear deformationprocess. In MSC.Marc this is available for 2-D geometry, while inthe sister product, MSC.SuperForm it is available for both two andthree-dimensional analyses. Contact boundary conditions areautomatically re-applied.

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As previously stated, MSC.Patran and MSC.Marc Mentat aregraphical user interfaces, and provide the environment forunderstanding, exploring, and interacting with your nonlinearanalysis. To facilitate the creation and understanding of yournonlinear model either one may be used.

These graphical user interfaces provide capabilities for theinteractive generation of finite element models, control of theanalysis, and interpretation of the results.

Automatic RRemeshing

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Eigenvalue EExtraction MMethods

• Lanczos• Inverse power sweep• Nonlinear (preload included)

Direct IIntegration SSchemes

• Newmark-beta• Single-step houbolt• Houbolt• Central difference (explicit)

Other UUnique FFeatures

• Harmonic response• Spectrum response• Fixed or adaptive time-stepping• Rayleigh and numerical damping

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MSC.Marc can be used to determine the stress intensity factor for a predetermined crack size. Two methods are available forcalculating the J-integral, or the extended J-integral. The crack can be loaded by kinematic, mechanical, or thermal loads. Theextended J-integral can also be used in dynamic analysis. Theprogram can automatically determine the paths around a crack tip in both two and three dimensions.

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MSC.Marc has extensive dynamic analysis capabilities. Eigenvalues can be obtained using either the inverse power sweep orthe Lanczos method. These procedures can extract from a few, tohundreds of modes. The modal extraction can be performed inconjunction with a nonlinear analysis to determine the influence ofpre-stress on the eigenvalues. Vibration studies can be performedusing modal superimposition or harmonic analysis. Harmonicanalysis of rubber bushings can include the internal damping of thematerial induced by their viscoelastic nature. In such cases, thedamping is a function both of the deformation and the frequencyof excitation. The spectral response of a structure subjected tobase motion can also be obtained.

Linear or nonlinear transient analysis can be performed. Whennonlinear analysis is required, either implicit procedures, such asNewmark-beta and traditional, new single-step Houbolt operators,or the explicit central difference operator can be chosen. Theexplicit method automatically chooses a stable time step. Allavailable nonlinear capabilities including contact, are available.

Key IInsertion wwith MMSCC.Marc MMentat

Disc BBrake AAnalysis

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The finite element method can also solve various field problems.MSC.Marc can be used for the solution of non-structural problems,such as:

Electrostatic AAnalysis:Predicts the electrical field given a charge distribution.

Magnetostatic AAnalysis:Calculates the magnetic field given a current distribution;nonlinear properties and permanent magnets may be included.

Electomagnetic AAnalysis:Determines the coupled electrical and magnetic field for eitherharmonic or transient behavior.

Hydrodynamic BBearing AAnalysis:Calculates the pressure distribution in a lubricant; specialcapabilities are included to allow the modeling of geometricfeatures, such as grooves.

Acoustic AAnalysis:Predicts the sound level in a rigid cavity.

Coupled SStructural AAcoustic AAnalysis:Performs coupled structural and acoustic analysis; allows largedeformation of cavity walls due to pre-stress.

Fluid AAnalysis:Performs Navier Stokes analysis for a laminar incompressible fluid.

Fluid-TThermal AAnalysis:Performs coupled fluid thermal simulation, which may include freeand forced convection.

Fluid-TThermal-SSolid AAnalysis:Performs thermal-structural analysis on components subjected tofluid loading.

Crack initiation and propagation is predicted by using one of twoavailable microscopic models. The first model is available forbrittle materials, such as concrete or ceramics, in which thefracture is based on the principal stress in the material. Theorientation of the crack is dependent on the stress orientation. Thesecond model is a microstructural model for composite materials,where the cracking is based on one of the five available failurecriteria, such as maximum stress or Tsai-Wu.

Material damage in ductile metals can be predicted using theGurson model for the determination of void densities. A damagemodel is available for the prediction of both the Mullins and Mieheeffects in carbon-filled rubber materials. The model implemented inMSC.Marc is a modified version of the Simo model, and simulatesstress softening and damage accumulation under cyclic loads.

MSC.Marc FFailure MMechanics CCapabilities

• J-integrals• Static• Dynamic• Linear• Nonlinear• Gurson damage model for ductile metals• Rubber damage model• Concrete cracking• Composite progressive failure

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Post-pprocessing GGraphical CControls

• Arbitrary cutting planes• Dynamic viewing• Multiple views• Color control• Real-time rotate, pan, and zoom• Animation of changing mode shapes and variation in time• Photorealistic rendering

In addition to standard interfaces to the leading CAD and FEMsystems supplied by MSC.Marc, you can customize your chosengraphical interface, either MSC.Marc Mentat or MSC.Patran, bycreating “buttons” for special purposes. Specialized translatorsand interfaces can be written to facilitate the fast, accurate, and efficient transfer of data to in-house or proprietary systems.MSC.Patran is also an open CAD environment allowing the user tocustomize the GUI and create generalized programs limited onlyby the imagination.

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MSC.Marc Mentat and MSC.Patran provide enormous flexibility inmesh generation and contain many powerful methods which allowyou to construct complex finite element meshes quickly and easily.A finite element mesh can be created interactively with only a fewkey strokes and mouse clicks. Two basic techniques may be used:create the mesh directly, or create the geometry and then use oneof the automatic mesh generators on this geometry. In eithercase, the mesh can be modified using the following options:

MSC.Marc MMentat Mesh MModification O p t i o n s

• Duplicate: Copies the mesh to a new position.• Expand/drag: Converts a one-dimensional geometry to

three dimensions.• Move: Moves the mesh.• Refine: Locally subdivides a group of elements.• Relax: Smoothes out the mesh to reduce the amount

of distortion.• Subdivide: Subdivides an element.• Symmetry: Duplicates an element about a plane.• Change class: Converts lower-order elements to

higher-order elements.

Open AApproach TTo PProblem SSolving

We recognize that every engineer can have special needs or othersoftware packages. To enable you to customize loads, materialproperties or boundary conditions for a particular situation,MSC.Marc offers a versatile capability called “user subroutines”.This facility is especially valuable in nonlinear FEA. Thousands ofMSC.Marc users have written their own FORTRAN subroutines forspecial analysis needs when required. These can represent spatialor temporal distribution of loads, complex material properties,friction coefficients, and so forth. MSC.Marc offers a rich library ofsuch subroutines to help you in solving problems.

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Both MSC.Marc Mentat and MSC.Patran provide a full range ofcapabilities for the visualization and interpretation of analysisresults. MSC.Marc Mentat’s tight integration with MSC.Marc meansthat results can be viewed simultaneously as they are generated.MSC.Patran uses direct results access (DRA) to the MSC.Marcresults or the results can be imported and remain in the databasewith the model.

Plotting CCapabilities

• Beam moment diagram• Generalized X-Y plotter• Ability to post-process files greater than 2GB• Contact body names• Pop-up menus for post scan, scales vector, and tensor• Contours• Vectors• Symbols• Principal stresses• Iso-surfaces (e.g., isotherms)• Result along a path• Result as a function of time• X-Y relationships• Variation of any calculated quantity over space and time• Contact nodes, area, forces, and stresses• Design sensitivity• Objective function

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The fully automatic mesh generators allow you to specify thenumber of points along the boundary, and the quality of the mesh. MSC.Patran has similarly powerful tools for meshgeneration and verification.

Full associativity is preserved between the surface geometry andthe finite element mesh. Coordinate changes to the geometry areautomatically reflected in the mesh. Boundary conditions appliedto the geometry are transferred to the elements. This is true forboth MSC.Marc Mentat and MSC.Patran.

MSC.Marc MMentat SSolid MModeling FFacilities

Solid models can be constructed using the ACIS geometric engine.This allows direct import of solids created with other ACIS-basedCAD systems. Solids are created by performing Booleanoperations (Union, Intersect, Subtract) on the geometry. The basegeometric primitives include blocks, cylinders, prisms, spheres,and torus. Blending of surfaces can be used to create sculpturedsurfaces. Solids can also be created by expanding 2-D surfaces.

MSC.Marc Mentat can also be used to automatically generatetetrahedral or hexahedral meshes from solids created byother CAD systems. Volumes are meshed based upon theenclosing surfaces, even if the surfaces do not precisely match.

Consequently, a 3-D solid mesh may be generated for any volumewhich is enclosed by a mesh.

Other MMSC.Marc MMentat Utilities

• Undo — allows easy correction of unanticipated results.• Procedure ffile — captures all user input for later

reference or edits.• On-lline hhelp — provides information from anywhere in

the system.• Annotation — lets the user add descriptive notes to the plot.• Length, aarea, aand vvolume ccalculations — are instantly

available.• Alias — creates a user-defined name for a MSC.Marc

Mentat command. • Parameter — permits the user to define parametric data.• Plotting — allows output on any printing device.

MSC.Patran has similar facilities for editing meshes. Othermeshing related options include trimming of surfaces, sweepingnodes on the outline and transition parameter input for meshing.Geometries also can be constructed or imported from CADsystems. The imported geometries are either in native mode (I-DEAS, CATIA, Pro/ENGINEER), or in standard interfaces (ACIS,Parasolids, DXF, IGES, VDAFS). All geometry is treatedconsistently as NURBS.

Geometries imported from CAD systems may be cleaned up usinga variety of tools in either MSC.Patran and MSC.Marc Mentatbefore being used by the mesh generators. This facilitates themeshing operation, reducing the number of elements in the model.

MSC.Marc MMentat FFacilities ffor CCreatingGeometric SSurfaces

• Quadrilateral patches• Ruled surfaces• Arbitrarily dragged curves• Bezier• NURBS• Cylinders• Spheres

The duplicate, move, and symmetry commands can be used onthese surfaces as well. As all surfaces are represented as NURBS,modifying a surface control point results in a new surface.Once created, geometric surfaces can be converted to a finiteelement mesh using any of the following options:

MSC.Marc MMentat MMesh GGeneration FFacilities

• Mapping TTechniques:a regular mesh is mapped onto the geometric surface.

• Overlay mmesher:a regular quadrilateral mesh is mapped onto the geometric surface, and then trimmed to the boundary.

• Fully aautomatic mmesh ggenerators:a triangular or quadrilateral mesh is created on the surface; a tetrahedral or hexahedral mesh is created in the volume.

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Documentation

Users have instantaneous access to the extensive MSC.Softwaredocumentation. This online documentation includes hyperlinksbetween topics, a search engine, and detailed graphics for allMSC.Software products.

Supported PPlatforms

MSC.Software is available on Windows NT, as well as a wide rangeof UNIX platforms. MSC.Marc also supports parallel processingarchitectures, including shared memory, distributed, andnetworked systems. MSC.Software is the established informationtechnology software and services provider helping companiesworldwide develop better products faster. MSC.Software’ssoftware and services are used to enhance and automate theproduct design and manufacturing process. The ability to modeland test software prototypes has cost effectively enabledmanufacturers to design and build everything from sophisticatedaircraft and automobiles to electronic products.

SSuuppppoorrtt SSeerrvviicceess

MSC.Software offers a variety of customer support services,including training, hotline support, quality assurance and softwaremaintenance, documentation, and consulting.

Training CCourses

Introductory, intermediate, and advanced training courses areoffered by local MSC.Software offices on a regular basis. Thesecourses introduce the novice to theoretical and usage aspects ofthe software, and expose the experienced user to more advancedfeatures of the software. Lecture sessions are always combinedwith workshops. Customer suggestions for training improvementare continually reviewed by our professional trainers to ensure thatour courses are effective and up-to-date.

Quality AAssurance

MSC.Software maintains a rigorous quality assurance program toverify that the annual software releases occur only after a set ofverification problems hasbeen satisfied. Errors reported fromcustomers andour own staff are categorized, corrected,documented,and included in subsequent releases.

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MSC.Software, the leading engineering software, systems andservices provider, helps over 9000 companies worldwide developbetter products faster. Number one in the product simulation market,MSC.Software products enhance and automate the product designand manufacturing process reducing development costs, time tomarket and warranty costs.

To find your local MSC.Software office or to learn more about ourcompany and our products, please contact:

Corporate:MSC.Software Corporation2 MacArthur PlaceSanta Ana, California 92707 USATel: 1 714 540.8900Fax: 1 714 784.4056

Customer Care Center:1 800 642.7437 (U.S. only)1 978 453.5310 (International)[email protected]

Worldwide Web - www.mscsoftware.comOn-line Purchases - www.engineering-e.comOn-line Simulation - www.simulationcenter.com

Europe:MSC.Software GmbHAm Moosfeld 1381829 Munich, GermanyTel: 49 89 43 19 87 0Fax: 49 89 43 61 71 6

Asia-Pacific:MSC.Software Japan Ltd.Entsuji-Gadelius Bldg.2-39,Akasaka 5-chomeMinato-ku, Tokyo 107-0052 JapanTel: 81 3 3505 0266Fax: 81 3 3505 0914

MSC, Patran, and MARC are registered trademarks of MSC.Software Corporation or itssubsidiaries.

MSC., MSC.visualNastran, MSC.Marc, MSC.Marc Mentat, MSC.Superform,MSC.Patran, and MSC.Patran Analysis Manager are trademarks of MSC.SoftwareCorporation or its subsidiaries in the United States and other countries. The foregoing isnot intended to be an exhaustive or comprehensive list of all trademarks owned byMSC.Software Corporation or its subsidiaries.

NASTRAN is a registered trademark of NASA. MSC.Nastran is an enhanced proprietaryversion developed and maintained by MSC.Software Corporation. All other trademarksare the property of their respective owners.

©2002 MSC.Software CorporationMA*4-02*Z*Z*Z*LT*BRO-FEATURES

Features of MSC · MSC.Marc provides unique capabilities for deformable-to-deformable contact that...

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Transcript of Features of MSC · MSC.Marc provides unique capabilities for deformable-to-deformable contact that...