Optimization-based simulation of nonsmooth rigid multibody dynamics

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. Key words. Multibody Dynamics, Contact, Coulomb Friction, Convex Relaxation. AMS subject classifications. 65K10, 90C33.

• Type: Journal
• Year: 2006
• Where: MP
• Authors: Mihai Anitescu
• Keywords: Convex Quadratic Program, MP 2006, Multibody Dynamics, Rigid Multibody Dynamics