Quasi-Static Transient Analysis

Quasi-Static Transient Analysis

A quasi-static transient analysis is performed if the load changes with time, but if this change is slow compared to the period (https://www.fea-solutions.co.uk/frequency-and-period/) of the first natural frequency (https://www.fea-solutions.co.uk/modal-analysis/) of the structure (https://www.fea-solutions.co.uk/static-vs-dynamic-analysis/).

An example where a quasi-static transient analysis is appropriate would be stresses due to thermal expansion during heat-up of a tubular heat exchanger. In this case, the non-uniform temperature field on the radiator changes with time, and hence the resulting stresses change with time. The change is however slow, so that inertia effects, calculated as mass x acceleration, do not have to be considered.

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