Abstract
Virtual tools and methods are getting increasingly important in order to predict the geometric outcome in early phases in 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 for a correct result. Contact modeling simulates how mating surfaces are hindered to penetrate each other, giving rise to contact forces that contribute to the deformation of the parts when assembled and the final shape of the sub-assembly after springback. These contact forces, have to be taken into consideration in each MCS-iteration. In order for reasonable response times, the calculation of the contact forces needs to be fast. In this paper, we formulate a quadratic programming problem, to solve the contact problem. The case studies presented, show that node based contact modeling can be efficiently solved through quadratic programming.
Authors and Affiliations
- Björn Lindau,
- Samuel Lorin,
- Lars Lindkvist,
- Rikard Söderberg,