The accuracy of any FEA is depends on the quality of mesh. Pro-mechanica uses P-element method for creating meshes where as majority of other packages use H-element method.
Using P-element has a number of advantages:
- Automatic mesh generators works better.
- The same mesh can be used for convergence analysis in the case of p-element, where as h-element requires deleting old mesh and new mesh needs to be recreated for refinement.
- Since same mesh is used throughout the analysis in case of a p-element, the meshes can be tied directly with geometry. That’s why pro-mechanica can perform optimization and sensitivity analysis, during which geometry of the body can change but the program does not require recreating the meshes again.
AutoGEM: For creating meshes you may either go to
or you can click the icon shown by the arrow in the picture.
After you click you will get a dialog box:
In the drop down menu you can see four different options for creating meshes.
If you select all with properties then you have to directly click to create a button. Pro-mechanica will automatically mesh all the entities wherever material a property has been defined.
If you want to mesh the volumes, surfaces or curves separately, then you have to select the respective option of the drop down menu and then the geometry selection arrow will be activated, by which you have to select the proper geometry. Then you have to click on the create button to mesh.
After meshing pro-mechanica will show the summary of the elements. If you don’t want old mesh available with the model you can click on the delete button before starting the meshing. For coming out of autoGEM once you click on close button after meshing it will ask whether to save the mesh or not you should always click on save.