Question: | What is the suggested disc space for using Finite Element Analysis? |
Answer: | The space needed depends on the size of the part to be examined and especially on the
number of degrees of freedom. That is - simply speaking - the number of nodes
in the mesh.
Depending on this number the following disc space for static analyses are required: These are approximate values.
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Question: | Can Finite Element Analysis be deactivated? |
Answer: | Yes. |
Question: | Where can I find materials? |
Answer: | You can find various material databases in
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Question: | I can not see any symbols that I have created within Finite Element Analysis? |
Answer: | Use the show button in the viewport. On the bottom of the menu you will find various buttons related to Finite Element Analysis. |
Question: | How can I select a study? |
Answer: | Either using the Structure Browser and clicking on a study or by clicking on a LBC in the viewport which belongs to the study. |
Question: | How can I delete a study? |
Answer: | In the Study menu choose menu item 'delete' and select the studies to be deleted. |
Question: | Where are the LBCs in the Drawlist Browser? |
Answer: | They are not there. Studies and LBCs only appear in the Structure Browser. |
Question: | Why can I not define a larger mesh size than the default element size with a mesh condition? |
Answer: | The mesher itself does not have these capabilities. |
Question: | How can different constraints and displacements being applied to one geometrical entity? For example a displacement on an edge. While one face that contains the edge is constraint in a direction perpendicular to this displacement. |
Answer: | The MSC/NASTRAN solver can not handle two different coordinate systems on one node. Therefore a combination of constraints and displacements can be achieved by using the same local coordinate system for these LBCs. |
Question: | There are odd positions of symbols - especially forces - if applied to the inside of a cylindrical face. What is it? |
Answer: | Symbols are displyed so that they are on a face - not inside the object. Often they are displayed symmetrically and therefore might overlap themselves so that their meaning is not always clear. In these cases scaling the symbols and changing the length in the settings menu gives reasonable results. |
Question: | I am not sure wether the calculated values are correct. How can I make sure to have correct values? |
Answer: | a) The mesh quality is responsible for the quality of the result values.
Refining the mesh increases the accuracy of the calculated results.
This can be done by reducing the global mesh size which affects the whole part, or
by using mesh conditions in certain areas. Mesh conditioning is absolutely necessary
in areas of high stress concentrations.
Rules for controling the mesh quality:Using quadratic h - elements:
Using p - elements:
b) It is essential that the loads and boundary conditions are applied as realistic as possible. |
Question: | How can I create my own materials database? |
Answer: | test_materials.dat is an example database which you can use as a template. Please refer to DA_matdb.html |