Results calculated by COSMOSXpress are invalid
if these assumptions are not satisfied.Linear static analysis makes the following assumptions:
The induced response is directly proportional to the applied loads. For example, if you double the magnitude of loads, the model's response (displacements, strains, and stresses) will double. You can make the linearity assumption if the following conditions are satisfied:
The highest stress is in the linear range of the stress-strain curve characterized by a straight line starting from the origin.
The maximum calculated displacement is considerably smaller than the characteristic dimension of the part. For example, the maximum displacement of a plate must be considerably smaller than its thickness and the maximum displacement of a beam must be considerably smaller than the smallest dimension of its cross-section.
You need to use nonlinear analysis if this assumption is not satisfied.
The part returns to its original shape if the loads are removed (no permanent deformation).
You need to use nonlinear analysis if this assumption is not satisfied.
Loads are applied slowly and gradually until they reach their full magnitudes. Suddenly applied loads cause additional displacements, strains, and stresses.
You need to use dynamic analysis if this assumption is not satisfied.
Results calculated by COSMOSXpress are invalid
if these assumptions are not satisfied.