Friction Handling for Penalty-Based Methods

In order to handle collisions between interacting deformable objects, the penalty method is widely employed since it is simple to implement and computationally inexpensive. In this paper a novel penalty method for handling collisions with the focus on the simulation of resting states is proposed. In detail, a novel time-coherent formulation for the static friction forces is presented that reproduces both the resting states and the transitions between sliding and sticking in a physically realistic way. The method is tested on a range of challenging real-time and off-line scenarios, underpinning the conceptual benefits of the approach.