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LANS Publications

"Optimization-Based Simulation of Nonsmooth Rigid Multibody Dynamics"

M. Anitescu

Preprint ANL/MCS-P1161-0504

Preprint Version: [pdf]

We present a time-stepping method to simulate rigid multibody dynamics with inelastic collision, contact, and friction. The method progresses with fixed time step without backtracking for collision and solves at every step a strictly convex quadratic program. We prove that a solution sequence of the method converges to the solution of a measure differential inclusion. We present numerical results for a few examples, and we illustrate the difference between the results from our scheme and previous, linear-complementarity-based time-stepping schemes.