Efficient Contact Modeling in Nonrigid Variation Simulation
Artikel i vetenskaplig tidskrift, 2015

Virtual tools and methods are becoming increasingly important in order to predict the geometric outcome in early phases of the product realization process. Method of influence coefficients (MIC) in combination with Monte Carlo simulation (MCS) is a well-known technique that can be used in non-rigid variation simulation. In these simulations, contact modeling is important to ensure a correct result. Contact modeling simulates how mating surfaces are hindered from penetrating each other, giving rise to contact forces that contribute to the deformation of the parts when assembled and the final shape of the subassembly after springback. These contact forces have to be taken into consideration in each MCS-iteration. To secure reasonable response times, the calculation of the contact forces needs to be fast. In this paper, we formulate a quadratic programming(QP) problem to solve the contact problem. The case studies presented show that node-based contact modeling can be efficiently solved through QP.

geometric analysis

contact modeling

nonrigid variation simulation

sheet metal

Författare

Björn Lindau

Chalmers, Produkt- och produktionsutveckling, Produktutveckling

Samuel C Lorin

Chalmers, Produkt- och produktionsutveckling, Produktutveckling

Lars Lindkvist

Chalmers, Produkt- och produktionsutveckling, Produktutveckling

Rikard Söderberg

Chalmers, Produkt- och produktionsutveckling, Produktutveckling

Journal of Computing and Information Science in Engineering

1530-9827 (ISSN)

Vol. 16

Ämneskategorier

Produktionsteknik, arbetsvetenskap och ergonomi

Annan teknik

Styrkeområden

Produktion

DOI

10.1115/1.4032077