3 DYNAmore InfoComposites DIGIMAT Liebold
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Transcript of 3 DYNAmore InfoComposites DIGIMAT Liebold
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1Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
About the Coupling of DIGIMAT to LS-DYNA – a Micro- /
Macro Interface for Composite Materials
Christian LieboldDYNAmore GmbH
Dr. Jan Seyfarthe-Xstream
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2Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Overview
� Composites in general
� The DIGIMAT approach – Micro-/Macro Coupling
� DIGIMAT – Tools and Applications
� Conclusion
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3Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Concrete (cement/stone/steel)
Long fiber reinforced polymers
(glass/carbon/PA/PP/EP)
Sandwich/Laminates (alloy/polymer/..glass/PVB/…)
Short fiber reinforced polymers
(glass/PP)
Composite materials, often shortened to composites or called composition
materials, are engineered or naturally occurring materials made from two or more
constituent materials with significantly different physical or chemical
properties which remain separate and distinct within the finished structure.
Definition:
Composites
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4Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Fibers Matrix (Resin)
� glass fibers
� carbon fibers
� aramid fibers
� …
� Duroplastic resins
� Thermoplastic resins
� Elastomeric resins
� Fillers
Fiber-preforms
� filament
� strand
� thread
Textile-preforms
� ply yarn
� roving
� PBO-fiber
� PE-fiber
� natural fibers
� woven fabric
� thin ply woven fabric
� non-woven fabric
� non crimp fabric
� knit, braid, mat
� stitching
� tailored-fiber placement
Fiber-Matrix preforms
Duroplastic resin Thermoplastic resin
long fibers:
� SMC:
Sheet Moulding Compound
� BMC:
Bulk Moulding Compound
long fibers:
� GMT:
glass mat reinforced thermoplastic
� LFT:
long fiber reinforced thermoplastic
endless fibers:
� prepreg
� short fiber: l ~ 0,1 – 1 mm
� long fiber: l ~ 1 – 50 mm
� endless fiber: l > 50 mm;
l/d -> 8
[1] Schuermann: Konstruieren mit Faser-Kunststoff-Verbunden
[1]
[2] Wikipedia
[2]
[1]
[2]
Composites
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5Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Composites
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6Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Capturing complex material properties
Composites
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7Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Approach
DIGIMAT calculates the material behavior and performance on a microstructural basis.
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8Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Approach
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9Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Approach
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10Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Approach
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11Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Approach
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12Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Tools & Applications
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13Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Tools & Applications
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14Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
RVE generation and in depth analysis
DIGIMAT-Tools & Applications digimat-FE
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15Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
RVE generation and in depth analysis
� Output formats:
� *.step
� *.iges
� *.breg
� Direkt link and meshing to:
� ANSYS Workbench
� Abaqus/CAE
� Different inclusion shapes &
material models
� Different ways for
microstructure definition
(volume/mass content,
multilayer, coating, orientation
definition)
� Max. packing algorithm
DIGIMAT-Tools & Applications digimat-FE
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16Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Tools & Applications digimat-MF
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17Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Tools & Applications digimat-MF
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18Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Tools & Applications digimat-MF
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19Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Material definition in MF
� Definition of the different
materials
� strain-rate dependent
� temperature dependent
� linear elasticity
� elastoplasticity
� elasto-viscoplasticity
� elasto-plasticity with damage
� viscoelasticity-viscoplasticity
� hyperelasticity
� …
DIGIMAT-Tools & Applications digimat-MF
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20Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Material definition in MF – matrix & inclusion definition
� Definition of the inclusion‘s shape
� multiple reinforced faces
� ellipsoidal reinforcements
� aspect ratio distribution
� Definition of orientation tensor
� multi-layer microstructures
� void inclusions
� coated inclusions
� deformable, quasi-rigid & rigid
inclusions
DIGIMAT-Tools & Applications digimat-MF
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21Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Material definition in MF – homogenization
DIGIMAT-Tools & Applications digimat-MF
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22Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Material definition in MF – resulting parameter
DIGIMAT-Tools & Applications digimat-MF
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23Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Material definition in MF – resulting parameter
� Output of global & local axes
� Engineering constants
� Output can be user defined
DIGIMAT-Tools & Applications digimat-MF
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24Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Tools & Applications digimat-MX
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25Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Parameter fitting in MX – overview
DIGIMAT-Tools & Applications digimat-MX
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26Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Parameter fitting in MX – semi-quantitative approach
DIGIMAT-Tools & Applications digimat-MX
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27Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Parameter fitting in MX – qualitative approach
Qualitative
DIGIMAT-Tools & Applications digimat-MX
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28Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Parameter fitting in MX – qualitative approach
DIGIMAT-Tools & Applications digimat-MX
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29Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Tools & Applications digimat-MX
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30Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Tools & Applications digimat-MAP
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31Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Mapping from process simulation onto crash mesh
DIGIMAT-Tools & Applications digimat-MAP
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32Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Mapping from process simulation onto crash mesh
� From mid-plane to
multi-layered shell
� Between continuum
3D elements
� Across the shell
thickness
� Fiber orientation
tensors
� Residual stresses
� Temperature fileds
� Weld lines
� Donor:
� Tetra or TRIA
� Hexa & Wedge
� Receiver
� Tetra or TRIA
� Hexa or QUAD
� Wedge
DIGIMAT-Tools & Applications digimat-MAP
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33Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Mapping from process simulation onto crash mesh
� DIGIMAT
� Moldex3D
� Moldflow Mid-
Plane
� Moldflow 3D
� REM3D
� SigmaSoft
� 3D Timon
� SIMPOE
� Abaqus
� ANSYS
� Ideas
� LS-DYNA
� PAM-CRASH
� Patran
� Radioss
� REM3D
� SAMCEF
� 3D Timon
� Simulayt
� MSC.Marc
� Nastran Sol400
DIGIMAT-Tools & Applications digimat-MAP
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34Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Mapping from process simulation onto crash mesh
� DIGIMAT
� Moldex3D
� Moldflow Mid-
Plane
� Moldflow 3D
� REM3D
� SigmaSoft
DIGIMAT-Tools & Applications digimat-MAP
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35Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
DIGIMAT-Tools & Applications digimat-CAE
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36Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Coupling Micro- & Macromechanics
DIGIMAT-Tools & Applications digimat-CAE
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37Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Micro - vs. Macro - Approach
� Hybrid approach: Trade-Off between accuracy and computation time
DIGIMAT-Tools & Applications digimat-CAE
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38Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Micro - Approach
� Micro-/Macro Transition:
• Use of homogenization
method to predict the macro
constitutive behavior of the
RVE.
� Macro FEA:
• Perform classical continuum
mechanics computations at
macro scale with macro
constitutive response.Material level:
Element level:
FE-model level:
The full homogenization approach operates at eachintegration point & time of analysis
DIGIMAT-Tools & Applications digimat-CAE
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39Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Hybrid - Approach
Reduction of information exchange to the macroscopiclevel.
� Macroscopical properties are pre-
computed
• DIGIMAT-CAE interface used to
communicate with the structural
code at each iteration of the
overall computation
• Per-phase micro results are
skipped
• Only available for two-phase
composites so far
• Reverse engineering to deliver a
good approximation to the exact
micro solution
� Hybrid solution provides a great
speed-up
• ~ 20 x for explicit analysis with
elasto (visco-) plastic materials
• Further speed-up expected for
release 4.4.1 (April 2013)
• No convergence trouble due to the
skipped homogenization
• Failure is based on state-of-the-art
First Pseudo Grain Failure (FPGF)
model for randomly distributed
short fibers
DIGIMAT-Tools & Applications digimat-CAE
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40Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Including failure mechanisms
� LS-DYNA
implicit & explicit
� Failure indicators:
� Tsai-Hill 2D & 3D
� Hashin 2D & 3D
� Tsai-Wu 2D & 3D
� Stress based failure
� Strain based failure
� …
� Micro-coupling
� Hybrid-coupling
DIGIMAT-Tools & Applications digimat-CAE
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41Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Linking DIGIMAT to LS-DYNA – DIGIMAT output files
� DIGIMAT-output:
• *.log – File
• *.dyn – File
• *.mat – File
Process documentation
(material data, micro-/hybrid approach, failure information…)
LS-DYNA User material*MAT_USER_DEFINED_MATERIAL_MODELS
$ MID RO MT LMC NHV IORTHO IBULK IG
1 1.67E-009 41 2 77 0 1 2
$ IVECT IFAIL
1 1
$ P1(K) P2(G)
4.46E+004 3.07E+004
Material information for calculationANALYSIS
name = DIGIMATinfo
type = mechanical
loading_name = Mechanical
finite_strain = off
finite_rotation = offload = LS-DYNA/Explicithomogenization_model = Mori_Tanaka
hybrid_methodology = on
hybrid_quasistatic_strain_rate = 1.000000000000000e-006
hybrid_dynamic_strain_rate = 1.000000000000000e+002
hybrid_strain_range = 1.500000000000000e-001
hybrid_failure_strain_rate = 1.000000000000000e-006
FPGF_failure_indicator = FailureIndicator1
FPGF_failure_weight = 1.000000000000000e+000
FPGF_critical_fraction = 8.000000000000000e-001
FPGF_refinement = on
…
DIGIMAT-Tools & Applications digimat-CAE
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42Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Linking DIGIMAT to LS-DYNA – update LS-DYNA model
*MAT_USER_DEFINED_MATERIAL_MODELS
$ MID RO MT LMC NHV IORTHO IBULK IG
1 1.67E-009 41 2 77 0 1 2
$ IVECT IFAIL
1 1
$ P1(K) P2(G)
4.46E+004 3.07E+004
Copy *.dyn material card into your input deck
Use a *KEYWORD_IDRename *.mat File into *41.mat – File
Update *DATABASE_EXTENT_BINARY*DATABASE_EXTENT_BINARY
$# neiph neips maxint strflg sigflg epsflg rltflg engflg
0 77 12 1 1 1 1 1
$# cmpflg ieverp beamip dcomp shge stssz n3thdt ialemat
0 0 0 1 1 1 2 0
Define the shell section by computing the stiffness of every layer as function of the position of
the layers in Moldflow:*PART_COMPOSITE
$# title
Example
$# pid elform shrf nloc marea hgid adpopt ithelfrm
2 2 0.833330 0.000 0.000 1 0 0
$# mid1 thick1 b1 ithid1 mid2 thick2 b2 ithid2
1 0.180000 0.000 0 1 0.213000 0.000 0
1 0.241500 0.000 0 1 0.267000 0.000 0
1 0.289500 0.000 0 1 0.309000 0.000 0
1 0.309000 0.000 0 1 0.289500 0.000 0
1 0.267000 0.000 0 1 0.241500 0.000 0
1 0.213000 0.000 0 1 0.180000 0.000 0
DIGIMAT-Tools & Applications digimat-CAE
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43Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Linking DIGIMAT to LS-DYNA – update LS-DYNA model
*KEYWORD_ID
DIGIMATinfo
*MAT_USER_DEFINED_MATERIAL_MODELS
$ MID RO MT LMC NHV IORTHO IBULK IG
1 1.67E-009 41 2 77 0 1 2
$ IVECT IFAIL
1 1
$ P1(K) P2(G)
4.46E+004 3.07E+004
*DATABASE_EXTENT_BINARY
$# neiph neips maxint strflg sigflg epsflg rltflg engflg
0 77 12 1 1 1 1 1
$# cmpflg ieverp beamip dcomp shge stssz n3thdt ialemat
*SECTION_SHELL
$# sid elform shrf nip
name = Fibers
type = elastic
density = 2.500000000000000e-009
Young = 7.500000000000000e+004
Poisson = 2.200000000000000e-001
name = Matrix
type = J2_plasticity
density = 1.310000000000000e-009
consistent_tangent = on
Young = 2.430000000000000e+003
Poisson = 4.000000000000000e-001
yield_stress = 2.000000000000000e+001
MICROSTRUCTURE
name = GFRP
phase = Matrix
phase = Fibers
DIGIMAT DIGIMATinfo41.mat - File
LS-DYNA Input Deck *.key - File
$ history var# 1 : E11_macro - Average macro 11-strain
…
$ history var# 40 : C1111_Matrix - Average Matrix 1111-stiffness component
…
$ history var# 77 : S13_Fibers - Average Fibers 13-Cauchy stress
DIGIMAT DIGIMATinfo.dyn - File
.key file
.mat file
.dof file
.dyn file
0.92 0.04 -0.01
0.07 0
SYM 0.01
0.50 0.05 -0.01
0.48 -0.01
SYM 0.02
DIGIMAT-Tools & Applications digimat-CAE
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44Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Linking DIGIMAT to LS-DYNA – Test example
*MAT_RIGID
DIGIMAT
material model
*BOUNDARY_PRESCRIBED_MOTION
Test example
� Classical three point bending test
� Results: nodal displacement at impactor, contact force at
supporters
� Shell elements ETYP = 2, 4800 elements using DIGIMAT-
material, 12 IP over the thickness (*PART_COMPOSITE)
� Calculation parameter: 0.2 sec., dt2ms: 4.5E-07
� LS-DYNA mpp971s, R5.1.1, Revision 65543
� Calculation with micro- and hybrib method
DIGIMAT-Tools & Applications digimat-CAE
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45Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Linking DIGIMAT to LS-DYNA – Test example
� Four cores used
� LS-DYNA mpp971s, R5.1.1, Revision 65543
� Calculation parameter: 0.2 sec., dt2ms: 4.5E-07
Standard LS-DYNA Material
� Calculation time: 5h 15min
HYBRID – results:
� Calculation time: 5h 15min
MICRO – results:
� Calculation time: ~52h 40min
DIGIMAT-Tools & Applications digimat-CAE
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46Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Linking DIGIMAT to LS-DYNA – full vehilce testing
DIGIMAT-Tools & Applications digimat-CAE
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47Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Linking DIGIMAT to LS-DYNA – full vehilce testing
16 cores 32 cores 64 cores
ISOTROPIC
(improved)17h 59min 9h 17min 10h 00min
HYBRID
(default)42h 31min
HYBRID
(improved)14h 16min
HYBRID
(optimized)26h 37min 12h 05min 8h 15min
Micro
(improved)152h 51min
DIGIMAT-Tools & Applications digimat-CAE
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48Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Linking DIGIMAT to LS-DYNA – woven composites
DIGIMAT-Tools & Applications digimat-CAE
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49Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Linking DIGIMAT to LS-DYNA – woven composites
DIGIMAT-Tools & Applications digimat-CAE
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50Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Linking DIGIMAT to LS-DYNA – woven composites
DIGIMAT-Tools & Applications digimat-CAE
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51Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Linking DIGIMAT to LS-DYNA – woven composites
DIGIMAT-Tools & Applications digimat-CAE
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52Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Micro – Macro Modeling: Linking DIGIMAT with LS-DYNA
injection molding simulation
0.92 0.04 -0.01
0.07 0
SYM 0.01
0.50 0.05 -0.01
0.48 -0.01
SYM 0.02
different fiber
orientation tensors
LS-DYNA
LS-Dyna
Shell 1 (Hughes–Liu),
2 (Belytschko-Tsay),
4 (Triangular Shell),
6 (S/R Hughes–Liu),
16 (Fully integrated) -> Not
for triangular elements
Solid 1 (Constant Stress),
2 (S/R Solid),
3 (Quadratic 8 nodes),
4 (S/R Tetrahedron),
10 (1pt Tetrahedron)
[Dr. J. Seyfarth: e-Xstream]
DIGIMAT-Conclusion
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53Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
Micro – Macro Modeling: Linking DIGIMAT with LS-DYNA
LS-DYNA
.k file
.mat file
.dof file
coupling to LS-DYNA
implicit & explicit
[Dr. J. Seyfarth: e-Xstream]
DIGIMAT-Conclusion
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54Infotag Composite Berechnung – Stuttgart, 17.04.2013 - Ch. Liebold:
About the Coupling of DIGIMAT to LS-DYNA – A Micro- / Macro Interface for Composite Materials
FIN