A ZeroLength driven by a coupled FiberSection (axial + moment
response, [ux, rz] in 2D; axial + biaxial moment, [ux, ry, rz] in 3D)
instead of ZeroLength's independent per-DOF materials — see
core::ZeroLengthSection's doc comment.
Sparse (zero_length_section row index, dof, material arena index) —
an independent spring for a DOF the section has no resultant for: uy
in 2D; uy/uz (shear) or rx (torsion) in 3D.
A
ZeroLengthdriven by a coupledFiberSection(axial + moment response,[ux, rz]in 2D; axial + biaxial moment,[ux, ry, rz]in 3D) instead ofZeroLength's independent per-DOF materials — seecore::ZeroLengthSection's doc comment.