Nonsmooth Newton method for Fischer function reformulation of contact force problems for interactive rigid body simulation

Publikation: Bidrag til bog/antologi/rapportKonferencebidrag i proceedingsForskningfagfællebedømt

n interactive physical simulation, contact forces are applied to prevent rigid bodies from penetrating each other. Accurate contact force determination is a computationally hard problem. Thus, in practice one trades accuracy for performance. The result is visual artifacts such as viscous or damped contact response. In this paper, we present a new approach to contact force determination. We reformulate the contact force problem as a nonlinear root search problem, using a Fischer function. We solve this problem using a generalized Newton method. Our new Fischer - Newton method shows improved qualities for specific configurations where the most widespread alternative, the Projected Gauss-Seidel method, fails. Experiments show superior convergence properties of the exact Fischer - Newton method.
OriginalsprogEngelsk
TitelVRIPHYS 09 : 6th Workshop on Virtual Reality Interactions and Physical Simulations
Publikationsdato2009
Sider105-114
ISBN (Trykt)978-3-905673-73-9
DOI
StatusUdgivet - 2009
Begivenhed6th Workshop on Virtual Reality Interaction and Physical Simulation VRIPHYS 09 - Karlsruhe, Tyskland
Varighed: 5 nov. 20096 nov. 2009
Konferencens nummer: 6

Konference

Konference6th Workshop on Virtual Reality Interaction and Physical Simulation VRIPHYS 09
Nummer6
LandTyskland
ByKarlsruhe
Periode05/11/200906/11/2009

ID: 15763318