A multi-body and multi-contact implicit nonlinear dynamics simulation

by N. Tardieu, EDF R&D / AMA

This calculation simulates the fall under gravity of a set of balls in a rigid conical reservoir subjected to an oscillating movement.
All balls can come into frictionless contact interaction with each other and with the reservoir. This is the main difficulty of this simulation.
The calculation is performed in large displacements and large rotations. Temporal integration is carried out using an implicit HHT scheme.
Numerical simulation runs smoothly and takes a few minutes on a laptop.