# Numerical methods in simulation of resistance welding

Chris Valentin Nielsen, Paulo A.F. Martins, Wenqi Zhang, Niels Oluf Bay

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

## Abstract

Finite element simulation of resistance welding requires coupling betweenmechanical, thermal and electrical models. This paper presents the numerical models and theircouplings that are utilized in the computer program SORPAS. A mechanical model based onthe irreducible flow formulation is utilized to simulate plastic deformation and the resulting distribution of stress, a thermal model based on transient heat transfer is used to determine thedistribution of temperature, and a steady-state electrical model is employed to calculate thedistribution of electrical potential and current density. From a resistance welding point of view, the most essential coupling between the above mentioned models is the heat generation by electrical current due to Joule heating. The interaction between multiple objects is anothercritical feature of the numerical simulation of resistance welding because it influences thecontact area and the distribution of contact pressure. The numerical simulation of resistancewelding is illustrated by a spot welding example that includes subsequent tensile shear testing
Original language English Proceedings of the VI International Conference on Coupled Problems in Science and Engineering Bernhard A. Schrefler, Eugenio Oñate, Manolis Papadrakakis Barcelona International Center for Numerical Methods in Engineering 2015 322-333 https://doi.org/978-84-943928-3-2 Published - 2015 6th International Conference on Coupled Problems in Science and Engineering - Venice, ItalyDuration: 18 May 2015 → 20 May 2015Conference number: 6http://congress.cimne.com/coupled2015/frontal/default.asp

### Conference

Conference 6th International Conference on Coupled Problems in Science and Engineering 6 Italy Venice 18/05/2015 → 20/05/2015 http://congress.cimne.com/coupled2015/frontal/default.asp

## Keywords

• Resistance Welding
• Finite Element Method
• Electro-Thermo-Mechanical
• Phase Changes
• Hardness
• Damage