Is it possible to consider the static zero position in a time history analysis?

Answer

Yes, it is possible to consider the static zero position in a time history analysis. For this, you can use the "Stationary state" function (not available in the linear modal analysis).


This function allows you to read a condition from a load case or a load combination that exists over the entire time history. These include the deformations, the stiffness modifications, and the states of nonlinearities.

This function can be activated in the RF‑/DYNAM Pro add-on module, in the "Calculation Parameters" tab of Dynamic Load Cases.


The time history diagram is well suited for results evaluation. In the attached example, Load Case 1 with the dead load was defined as a stationary state. In the time diagram, you can see that the deformations oscillate about the value that is reached by the static zero position.

Keywords

Time history Zero position Stationary state Dynamic analysis

Reference

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