Introduction

*CONTROL_SHELL
Twisted Cantilever Beam
LS-DYNA Manual Section: *CONTROL_SHELL

Example: Twisted Cantilever Beam

Filename: control_shell.beam-twist.k

Description:
A beam twisted 90 degrees about its length is constrained on on e edge and has
a point load prescribed normal to the opposite end of the beam.

Model:
The beam measures 12.00 * 1.10 * 0.32 cubic inches. A concentrated load is
applied to one node on the end in the x-direction and the other node on the
end in the z-direction.

Input:
This model uses the Hughes-Liu five through the thickness integration points
(*CONTROL_SHELL, *SECTI ON_SHELL). The element has the shell normal update
calculation performed at each nodal fiber every cycle (*CONTROL_SHELL).
Note: This is another example that will not work correctly with the B-T shell
formulation (unless warping stiffness is added).

Results:
The beam oscillates about a neutral amplitude.

Reference:
Belytschko, Wang and Chiang.