ANSYS- Modeling& Meshing Workbook (1)

7/17/2019 ANSYS- Modeling& Meshing Workbook (1)

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Modeling and Meshing Workbook

FEA and ANSYS

•

What is FEA?• About ANSYS

ANSYS Basics

• Starting ANSYS

• ANSYS Workbench Environment

• The GUI

• Graphics and Picking

• The Database and Files

• Saving Files

• Exiting ANSYS

• File Types

General Analysis Procedure

• Overview• Preliminary Decisions

• Preprocessing

• Solution

• PostprocessingPractice: Navigation of ANSYS Menus. Forward and Backward.



Introduction to ANSYS Modeling

Direct Generation vs. Solid Modeling

Direct Generation

o Creating nodes and elements

o Filling between nodes

o Setting Element Attributes

Solid Modeling

Bottom up

Using key points

Using lines, splines & arcs

Using areas and volumes (arbitrary)

Top Down

From Primitives –

Creating rectangle, circle, polygon, block, cylinder,

prism, sphere, cone and torus.

Concepts of hard points, line fillets and area fillets.

Practice-1: Create Surface as shown below using techniques discussed above.



Practice-2 Create Surface as shown below using techniques discussed above.

Practice:3 Create Surface as shown below using techniques discussed above.



Modeling with Boolean operationsIntersectAddSubtractOverlapGlueDivide

Introduction to Coordinate SystemsTypes of coordinate Systems

Global & LocalActive coordinate system

Introduction to Working PlanesCreating a new working planeMoving and rotating the working plane

Modify / Transformation commandsCopyReflectMove/ ModifyScale

Practice: 4 Create Solid as shown below using techniques discussed above.



P r a c t i c e : 5 C

r e a t e S o l i d a s s h o w n b e s i d e u s i n g t e c h n i q u e s

d i s c u s s e d a b o v e .

Practice: 6 Create Solid from the 2 views given below.



Model Creation by Extrusion

Sweeping key points along a trajectory to create lines

Revolving key points about an axis to create arcs or full circles, normal to the axis

Sweeping lines or splines along a trajectory to get areas

Revolving lines, splines or arcs about an axis to create cylindrical areas.

Giving depth to an area to create a volume, normal to the area Creating a volume with tapered faces

Sweeping an area along a trajectory to create a volume

Revolving an area about an axis to create a cylindrical volume

Extending Lines

Modifying an existing line by extending that line to a desired length

Creating a new line on the basis of an existing line, where the existing line willnot be modified.



End of Modeling



Meshing a Model

Introduction to elements

One Dimensional Elements

Two Dimensional Elements

Two and Half Dimensional Elements

Three Dimensional Elements

Quadrilateral Elements

Triangular Elements

Brick Elements

Tetrahedral Elements

Shell Elements

Introduction to Meshing

Mapped and free meshing

How to control mesh size?

How to use Mesh Tool?

Concatenation and its significance

Clearing mesh and re-meshing

Some useful meshing techniques

Numbering Controls

Merging Coincident Points

Compressing Item Numbers

Setting Start Number & viewing Start Number Status

Adding Number Offset

What is coupling and how to create coupled sets of nodes?



End of Meshing Theory/ Simple Practice

Now with the above knowledge try to model and mesh the components given

in the following pages…

Assume dimensions appropriately if not given/ clear)



Meshing Exercise-1

Meshing Exercise-2



Meshing Exercise-3

Meshing Exercise-4



Meshing Exercise-5

Meshing Exercise-6



Meshing Exercise-7

Meshing Exercise-8



Meshing Exercise-9

Meshing Exercise-10



Meshing Exercise-11

Meshing Exercise-12



Meshing Exercise-13

Meshing Exercise-14



Meshing Exercise-15



ProE to NSYS



If computer Hangs/ Takes time…skip the above things, as these problems needs highermemory and system configuration, which are not usually needed for training purposes.

END OF MESHING(Hope that you got the basic concepts of modeling and meshing in ANSYS)

ANSYS- Modeling& Meshing Workbook (1)

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