struct.node.force.unbal.local

Syntax

m := struct.node.force.unbal.local(sn<,i>)

Get the unbalanced force (expressed in the node-local coordinate system) of the structure node. The unbalanced force is the sum of all forces and moments acting on the node.

Returns:

m - matrix of unbalanced force with all degrees-of-freedom, if the argument i is not assigned; or, unbalanced force at the i th degree-of-freedom, if the argument i is assigned.

Arguments:

sn - pointer to a structure node

i - degree-of-freedom, i ∈ {1, 2, … , 6} or {1, 2, 3} in 2D. The default is 1.