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How can I control stiffness reductions for surfaces by load case design?

Answer

First, select the type of stiffness modification to be carried out in the Edit dialog box of the respective surface in the "Modify Stiffness" tab. For example, as shown in Figure 01, by using the "multiplication factors".

Multiplication factors can be specified for the different stiffness components (for example, membrane stiffness).

Whether the factors or the set stiffness modification are applied in the individual load cases or load combinations is controlled by the calculation parameters. Now, this means that the modification is taken into account as soon as the check box shown in Figure 02 has been set. When you remove the check box, the modifications will not be considered for the surfaces.

Thus, it is possible to control the stiffness modification by load case or load combination.

Keywords

Modify stiffness Stiffness factor Calculation parameters Surface stiffness Multiplication factor

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