Efficient Contact Modeling in Nonrigid Variation Simulation
Journal article, 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

Author

Björn Lindau

Chalmers, Product and Production Development, Product Development

Samuel C Lorin

Chalmers, Product and Production Development, Product Development

Lars Lindkvist

Chalmers, Product and Production Development, Product Development

Rikard Söderberg

Chalmers, Product and Production Development, Product Development

Journal of Computing and Information Science in Engineering

1530-9827 (ISSN)

Vol. 16 1

Subject Categories

Production Engineering, Human Work Science and Ergonomics

Other Engineering and Technologies

Areas of Advance

Production

DOI

10.1115/1.4032077

More information

Created

10/7/2017