struct.shell.prop.ortho

Syntax

l := struct.shell.prop.ortho(p,itype)

struct.shell.prop.ortho(p,itype) := l

Get/set the orthotropic material properties as a list of 4 values.

Membrane stiffness is indicated by itype = 1, and bending stiffness is indicated by itype = 2.

If the element does not have orthotropic properties an error will occur.

See the structure shell property, structure geogrid property, and structure liner property commands.

Modifying the stiffness of an element can result in instability if done during cycling. Dependent values should be forced to update using struct.force.update. See the documentation of struct.force.update for comments on the cost.

Returns:

l - the shell orthotropic material stiffness coefficients for itype

Accepts:

l - the shell orthotropic material stiffness coefficients for itype

Arguments:

p - a pointer to a shell element

itype - indicates membrane (1) or bending (2) stiffness