Corotational formulation for nonlinear dynamics of beams with arbitrary thin-walled open cross-sections
A nonlinear dynamic formulation for beams with arbitrary thin-walled cross-section. The corotational kinematic description is used to derive internal and inertia terms. The warping deformations and the eccentricity of the shear center are considered. Each node has 7 degrees of freedom; cubic interpolations are used in local system. The predictions of beam element are in good agreement with Abaqus 3D-solid analyzes.
nonlinear dynamics thin-walled corotational method 3d beam elements finite rotations