Download - ANSYS Fundamentals 1 This document contains no technical data subject to the EAR or the ITAR
1
ANSYS
ANSYS Fundamentals
This document contains no technical data subject to the EAR or the ITAR.
2
ANSYSHow to Start Ansys and Product Launcher
Start > Programs > ANSYS > Interactive
1
2
34
Job name text box
License Type:
File Management Tab
Working Directory text box
123
4
This page contains no technical data subject to the EAR or the ITAR.
3
ANSYSProduct Launcher - Configuration
1
2
Manual memory settings
Graphic device hardware acceleration
1
2
This page contains no technical data subject to the EAR or the ITAR.
4
ANSYSGUI
1
2
1
Output Window
Utility Menu
Graphics Area
Main Menu
Input Line
Current Settings
Raise/Hidden Icon
User Prompt Info
Model Control Toolbar
Contact Manager Icon
1 22
3
3
4
4
5
5
67
76
8
8 9
910
10
Note: Closing the output window will end the ANSYS session!
This page contains no technical data subject to the EAR or the ITAR.
5
ANSYSGUI
Dialog boxes may have both Apply and OK buttons.
• Apply performs the action, but does not close the dialog box for repeated use.
• OK performs the action and closes the dialog box.
1
1
2
2
This page contains no technical data subject to the EAR or the ITAR.
6
ANSYSFiles
SAVE command: copies the database from memory to a file called the database file (or db file).
Utility Menu > File > Save as Jobname.dbUtility Menu > File > Save as…
RESUME command: restore the database from the db file back into memory
Utility Menu > File > Resume Jobname.dbUtility Menu > File > Resume from…
ANSYS database: all data ANSYS keeps in memory as model is build, solved, and postprocessed.
This page contains no technical data subject to the EAR or the ITAR.
7
ANSYSFiles
Erasing everything in memoryTo reset ANSYS and start a new database select :
Utility Menu > File > Clear & Start New
Or use the /CLEAR command.
1
1
This page contains no technical data subject to the EAR or the ITAR.
8
ANSYSOnline Help
To start the help system use one of the following options:• Launcher > Product Help• Utility Menu > Help > Help Topics• Any dialog box > Help• Type HELP,name in the Input Window. Name is a command or element name.
1
23
12
3
This page contains no technical data subject to the EAR or the ITAR.
9
ANSYSOnline Help
• Type HELP, PLANE42 for help on structural plane element
This page contains no technical data subject to the EAR or the ITAR.
10
ANSYSPlotting
To display entities on the graphic area and visualize the model.
Util Menu > Plot
Plot keypoints123
1
Plot Lines
Plot Areas
Plot Volumes
Plot Nodes
Plot Elements
234
56
456
This page contains no technical data subject to the EAR or the ITAR.
11
ANSYSPractice 1
Practice 1 will show how to:• Lunch Ansys• Load a db file• Navigate the menu• Call the help system• Plot geometric entities: lines, areas, volumes
Instructions found in Practice-1.pptx
This page contains no technical data subject to the EAR or the ITAR.
12
ANSYSSelect Logic
Select Logic allows selection of a subset of entities and operate only on those entities.
Three step process:• Subset selected• Operation performed on subset• Full set reactivated
Util Menu > Select > Entities
Type of entity to select
Selection criteria
Type of selection
12
3
1
2
3
This page contains no technical data subject to the EAR or the ITAR.
13
ANSYSSelect Logic
Selection types:• From Full: selects a subset from the full set of entities.
• Reselect: selects (again) a subset from the current subset.
• Also Select: adds another subset to the current subset.
• Unselect: deactivates a portion of the current subset.
• Invert: toggles the active and inactive subsets.
• Select None: deactivates the full set of entities.
• Select All: reactivates the full set of entities.
Select None
Invert
Select All
Reselect
Also Select
Unselect
From Full
This page contains no technical data subject to the EAR or the ITAR.
14
ANSYSComponents
• Components are user-named subsets of entities.• The name can then be used in dialog boxes or as arguments to commands.• A group of nodes, or elements, or keypoints, or lines, or areas, or volumes can be defined as a component.
• Only one entity type is associated with a component.• Components can be selected or unselected. When you select a component, you are actually selecting all of the entities in that component.
• Component Manager can be accessed from: Util Menu > Select > Component Manager
This page contains no technical data subject to the EAR or the ITAR.
15
ANSYSPicking
Picking existing entities to perform an operation.Picker window allows to enter entity numbers directly.All entities can be picked with the Pick All button.
Mouse button assignments for picking:• Left mouse button picks (or unpicks) the entity or location closest to the mouse pointer. Pressing and dragging allows you to “preview” the item being picked (or unpicked).
• Middle mouse button does an Apply. Saves the time required to move the mouse over to the Picker and press the Apply button. Use Shift-Right button on a two-button mouse.
• Right mouse button toggles between pick and unpick mode.
This page contains no technical data subject to the EAR or the ITAR.
16
ANSYSPicking
Pick hotspot locations:• Areas and Volumes have a hotspot near the centroid of the solid model entity.
• Lines have three hotspots - one in the middle and one near each end.
• When you are required to “pick” an entity, you must pick on the hotspot.
This page contains no technical data subject to the EAR or the ITAR.
17
ANSYSWork Plane
• Working Plane - a movable, 2-D reference plane used to locate keypoints.
• Default position of the WP origin is the global origin. It can be moved or rotated as needed.
• WP defined by the XY plane. WP is infinite.
• To position the WP use Util Menu > WorkPlane > Offset WP by Increments
Translate
Rotate
This page contains no technical data subject to the EAR or the ITAR.
18
ANSYSCoordinate Systems
Types of Coordinate systems: • Global and local coordinate systems: used to locate geometry entities(nodes,
keypoints, etc.) • Display coordinate system: determines the system in which geometry items are
listed or displayed.• The nodal coordinate system: defines the degree of freedom directions at each
node.• The element coordinate system: determines the orientation of material
properties.• The results coordinate system: used to transform nodal or element results data
to a particular coordinate system for listings, displays, or general postprocessing.
This page contains no technical data subject to the EAR or the ITAR.
19
ANSYSCoordinate Systems
Global Coordinate System• The global reference system for the model.• Can be se to Cartesian (csys,0), cylindrical (csys,1), or spherical (csys,2).• Global coordinate systems can not be changes are always available.• To change the coordinate system use the command csys,”coordinate id”
csys,0 csys,1 csys,2
This page contains no technical data subject to the EAR or the ITAR.
20
ANSYSCoordinate Systems
Local Coordinate System• A user-defined coordinate system at a specified location. Coordinate system ID should be 11 or greater.
• Several ways to define:1. At WorkPlane origin2. At specified coordinates3. At existing keypoints or nodes4. Can be Cartesian, cylindrical, or spherical.5. Can be rotated about X, Y, Z axes.
X
Y
X
YX
Y
CSYS,11CSYS,0
CSYS,12
This page contains no technical data subject to the EAR or the ITAR.
21
ANSYSPractice 2
Practice 2 will show how to:• Pick entities• Manipulate the WorkPlane• Define an manipulate Coordinate systems• Perform Selections• Component creation
Instructions found in Practice-2.pptx
This page contains no technical data subject to the EAR or the ITAR.
22
ANSYSSolid Modeling
Solid Modeling: the process of creating solid models.
Definitions:• A solid model is defined by volumes, areas, lines, and keypoints.• Volumes are bounded by areas, areas by lines, and lines by keypoints.• Hierarchy of entities: from low to high:
Lower Higher• keypoints < lines < areas < volumes • Cannot delete/remove an entity that belongs to a higher-order entity.
VolumeArea Line Keypoint
This page contains no technical data subject to the EAR or the ITAR.
23
ANSYSGeometry Creation
• Top Down: Using Boolean operations with volumes (or areas) create the final shape.
V1
V2
V1 – V2
This page contains no technical data subject to the EAR or the ITAR.
24
ANSYSGeometry Creation
• Bottom Up: starts with keypoints, from which shapes are “build up”
Kepoints Lines Area
This page contains no technical data subject to the EAR or the ITAR.
25
ANSYSElement Type Definition
Main Menu > Preprocessor > Add/Edit/Delete >
Click to show Element types available
Select element type
Select element shape
1
2
3
1
2
3
This page contains no technical data subject to the EAR or the ITAR.
26
ANSYSMaterial Properties Definition
Main Menu > Preprocessor > Material Models
Click to Material Model number
Select Structural (linear/nonlinear/etc)
Select isotropic
1
32
1
23
Enter properties4
4
This page contains no technical data subject to the EAR or the ITAR.
27
ANSYSMeshing
Main Menu > Preprocessor > Meshing > Mesh Tool
The mesh tool consists of a collections of commands required to generate a mesh.
Smart Size Controls
Local Size Controls
1
32
4
3Meshing Controls4
4
This page contains no technical data subject to the EAR or the ITAR.
1
Attributes Controls
2
5 Refinement Controls
5
28
ANSYSMeshing
Main Menu > Preprocessor > Meshing > Mesh Tool
To assign predefined element type, real constants, material, sections, Select Element Attributes drop down menu.
Select Type to apply to the area3
1
4
This page contains no technical data subject to the EAR or the ITAR.
1
From the options select geometric entity to apply the attribute.
3
Select Material to apply to the area4
4
Select OK to apply attribute5
2
Select Set2
5
29
ANSYSMeshing
Main Menu > Preprocessor > Meshing > Mesh Tool
To assign size controls select entity
Select lines to apply size control
2
1
4
This page contains no technical data subject to the EAR or the ITAR.
1
Select the Set button next to Lines label
2
Specify number of divisions
3
Select OK to apply size control
4
3
4
5
5Applied line divisions6
6
30
ANSYSMeshing (mapped)
Main Menu > Preprocessor > Meshing > Mesh Tool
To apply mesh controls select entity from drop down menu
Select mapped mesh
2
1
4
This page contains no technical data subject to the EAR or the ITAR.
1
Select Area option
2
Select area to mesh
3
Resulting mesh
4
34
5
5
31
ANSYSMeshing (free)
Main Menu > Preprocessor > Meshing > Mesh Tool
To apply mesh controls select entity from drop down menu
Select free mesh
2
1
4
This page contains no technical data subject to the EAR or the ITAR.
1
Select Area option
2
Select area to mesh
3
Resulting mesh
4
34
5
5
32
ANSYSLoads (Force)
Main Menu > Preprocessor > Loads > Define Loads > Apply > Structural > Force/Moment > On Nodes
Select nodes to apply the forces
Specify force magnitude
2
1
4
This page contains no technical data subject to the EAR or the ITAR.
1
Select force direction
2Select OK to apply force
3
Resulting applied forces
4
3
5
5
33
ANSYSLoads (Displacement)
Main Menu > Preprocessor > Loads > Define Loads > Apply > Structural > Displacements > On Nodes
Select nodes to apply the displacement
Specify displacement value
2
1
4
This page contains no technical data subject to the EAR or the ITAR.
1
Select DOF to specify
2
Select OK to apply displacement
3
Resulting applied displacements
4
3
5
5
15
34
ANSYSSolution
Main Menu > Solution > Analysis Type > New Analysis
Click Static1
1
This page contains no technical data subject to the EAR or the ITAR.
35
ANSYSSolution
Main Menu > Solution > Solve > Current LS
Click OK to start solution.1
1
This page contains no technical data subject to the EAR or the ITAR.
36
ANSYSGeneral Postprocessor
Main Menu > General Postprocessor > Read Results > First Set
Click on Displacement vector sum1
1
Main Menu > General Postprocessor > Plot Results > Contour Plot > Nodal Solution
This page contains no technical data subject to the EAR or the ITAR.
37
ANSYSPractice 3
Practice 3 will show how to:• Define geometry• Define element types• Define material properties• Define boundary conditions• Define loads• Solve the model• Review results
Instructions found in Practice-3.pptx
This page contains no technical data subject to the EAR or the ITAR.
38
ANSYSPractice 4
Practice 4 will show how to:• Use axisymmetric PLANE42 element for stress analysis of
a turbine disk
Instructions found in Practice-4.pptx
This page contains no technical data subject to the EAR or the ITAR.