Debriefing: ANSYS Workbench Example
Where is the ANSYS Workbench working directory
?
(DEFAULT) your Documents & Settings
Folder - OR - where it was last saved: Analysis Data Management (Details Area)
WB Tools > OPTIONS setting may include:
(Project Management) Working Directories
(Appearance) Background Style / Background Color: Solid & White
(Graphics Interaction) Mouse Button settings
(Geometry Import) if the default for solid and surface bodies is not what you need
ANSYS DesignModeler®
an "Add-On" to any installation - not all sites will have it
could use Pro/E or SolidWorks or any other modeling program to construct geometry
imported geometry may be:
operated on in DesignModeler
could be linked to the project "schematic" and taken directly to simulation
Remember - setting units is done only at startup of DesignModeler
watch for warnings in the Outline (yellow or red symbols)
in the Details window - undefined items are highlighted yellow
Before Opening Model (Mechanical Simulation), on the Project Page, 2D or 3D modeling is specified under Geometry, Properties, Advanced Geometry Defaults
IF you take a model into Simulation as 3D when you wanted 2D:
Return to the Project Schematic page, click on “Geometry”
Change the Analysis Type to 2D under Properties
Next, Right-click on Model and
select “Reset.” Say OK to the warning.
(You will lose info you may have added for Simulation)
Open DesignSimulation again.
ANSYS Mechanical®
all installations have Mechanical Simulation
you can change units anytime in Mechanical
you do NOT build geometry in Mechanical
if you change the model in DesignModeler, to reload the geometry in Mechanical, at the top of the Outline, right-click on Model, Pick "Refresh Geometry" or “Refresh Materials”
In the Outline - click on Geometry then look in Details Area to check size, weight, volume, etc. of the model
You can insert a load or
constraint by using the right mouse on the analysis type or using the
drop-down menus above the Outline
"Solution"
is a list of results we want to examine.
(default) Always includes the "Solution Information" object for debugging or finding other analysis details
When you click on the
"Solution" object in the Outline, you can adjust many settings
in the Details Area which effect the entire solution. Also, check “Analysis
Settings”
You can insert a result in the
Solution outline by using the right mouse on "Solution" or using
the drop-down menus above the graphics area
What are "weak
springs" used for ?
To "support" bodies.
However, a properly constrained model for static structural analysis should
not need weak springs at all. Recommendation: ALWAYS suppress weak
springs - they are a crutch for sloppy modeling.
What are the little "D" or "P"
boxes for beside some of our data entries ?
Design study or model Parameters (not needed yet
- advanced usage of WB)
What if the solution fails ?
find error and warning messages
[check in ANSYS Workbench Help >
Simulation > Troubleshooting]
Why would it be important to
"Clear Generated Data" for a model before saving ?
reduce disk space for storage
What could you lose ?
the
results of the simulation are lost, but can the restored by solving again
Where are the scratch files from
a solution ? In a folder under the
project folder.
Where is mesh error (SEPC) ? (Why use a Solution Command Object ?) Workbench does not show overall mesh error, SEPC. The only way to check it is to use the command object.
The cursor mode can be switched between picking geometry or pan/zoom/rotate using the right mouse and setting the "Cursor Mode". There are also buttons above the graphics area for these settings.
The right mouse menu always has a "Fit" view function as well as predefined standard views
The XYZ triad in the corner of the screen is live and will change views by clicking on it.
Various "Wizards" are available on the right side of the screen (activate using View > Windows) - we won't use these while we are leaning about FEA analysis.
Exercise 5 – questions
1) How does a “frictionless support” work for a symmetry condition ?
2) WHY make two objects for Frictionless Support ?
3) WHY is 6000 lbf the proper value ?
4) WHY use a Force when we used Pressure load before ?
5) What are “weak springs” ?
6) Copy and save the lines which define the project units [Solution Information]
Reading
Assignment:
ANSYS Help System > Workbench
> Getting Started in ANSYS Workbench