It is general perception that non-linear structural problems are usually associated with Cosmosworks advanced professional module. Cosmos designer package can handle large deflection for contact modeling. With large deflection switch turned on cosmos solver performs true non-linear calculation by applying loads in incremental steps and formulating new stiffness matrix with load increment. When you have models with sliding type contact conditions large deflection option comes in very handy.
Its normally recommended to run the assembly analysis first with no penetration type contact condition and large deflection switched off. After running the analysis look at your displacement plot in a scale of 1. When you can see noticeable deformation in true scale then turn on large deflection and run the problem again.
To consider material based non linear and non contact based large deflection effects please use Cosmosworks advanced professional module. When using large displacement solution for static studies, program uses automatic load stepping and you can only view the results at the last step which corresponds to the full load.
To activate the large displacement option:
1. In the COSMOS Analysis Manager tree, right-click the static study icon and select Properties.
The Static dialog box appears.
2. On the Options tab, check large displacement.
3. Click OK.
No comments:
Post a Comment