Property modifiers may be used as a scale factor to modify the stiffness of section properties for frame, shell, and tendon objects. Property modifiers may be assigned either to object sections or to the objects themselves.

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Shear release

A shear release may be applied to a structural member by assigning a sufficiently small property modifier to f12. This modifier could be on the order of 10-4 times smaller than the other stiffness properties. It is best to use a small value such that numerical problems do not impede the formulation of a numerical solution.

Shear walls

A shear release may be useful to release certain shear walls from in-plane shearing behavior. To release out-of-plane shear, assign the small property modifier to m22. This should allow walls to function only as bearing walls.

See Also