Saturday 14 April 2012

When to go for a static analysis


A static stress analysis:
·         Used when inertia effects can be neglected;
·         Can be linear or nonlinear; and
·         Ignores time-dependent material effects (creep, swelling, viscoelasticity) but takes rate-dependent plasticity and hysteretic behavior for hyperelastic materials into account.

Nonlinearities can arise from large-displacement effects, material nonlinearity, and/or boundary nonlinearities such as contact and friction. If geometrically nonlinear behavior is expected in a step, the large-displacement formulation should be used.

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