Title: On stress distribution and fatigue strength of a single elliptical spot-welded lap joint under tension-shear load

Authors: D.H. Bae, J. Niisawa, A. Koiso

Addresses: Graduate Department, College of Science and Technology, Nihon University, Tokyo, Japan. ' Graduate Department, College of Science and Technology, Nihon University, Tokyo, Japan. ' Graduate Department, College of Science and Technology, Nihon University, Tokyo, Japan

Abstract: Stress distributions in a single elliptical spot-welded lap joint under tension-shear load were investigated by the finite-element method. It was found that the maximum axial stress at the nugget edge of a laterally long elliptical nugget is lower than that of round nuggets with the same area. Using the maximum axial stress at the nugget edge as the fatigue strength, S-N curves of specimens with various dimensions and nugget ellipticities converge to nearly one line.

Keywords: fatigue tests; finite element analysis; FEA; lap joints; spot welding; tension-shear load; stress distribution; fatigue strength.

DOI: 10.1504/IJVD.1989.061540

International Journal of Vehicle Design, 1989 Vol.10 No.3, pp.284 - 294

Published online: 26 May 2014 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article