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*SENSITIVITY

Keyword type: step

This procedure is used to perform a sensitivity analysis. There is one optional parameter NLGEOM. If active, the change of the stiffness matrix w.r.t. the design variables is performed based on:

It makes sense to include NLGEOM if it was used on a previous static step and not to include it if it was not used on a prevous static step or in the absense of any prevous static step.

Notice that the objective functions SHAPE ENERGY, MASS and DISPLACEMENT require a previous *STATIC step, EIGENFREQUENCY requires a previous *FREQUENCY step, possibly preceded by a *STATIC step, cf. *OBJECTIVE.


First line:

Example:

*SENSITIVITY

defines a linear sensitivity step.


Example files: beampic, beampis.


next up previous contents
Next: *SHELL SECTION Up: Input deck format Previous: *SELECT CYCLIC SYMMETRY MODES   Contents
guido dhondt 2016-07-31