An Energy Decaying Scheme for Nonlinear Dynamics of Shells
نویسندگان
چکیده
A novel integration scheme for nonlinear dynamics of geometrically exact shells is developed based on the inextensible director assumption. The new algorithm is designed so as to imply the strict decay of the system total mechanical energy at each time step, and consequently unconditional stability is achieved in the nonlinear regime. Furthermore, the scheme features tunable high frequency numerical damping and it is therefore sti y accurate. The method is tested for a nite element spatial formulation of shells based on mixed interpolations of strain tensorial components and on a two-parameter representation of director rotations. The robustness of the scheme is illustrated with the help of numerical examples.
منابع مشابه
On the Modeling of Shells in Multibody Dynamics
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