This content is not included in your SAE MOBILUS subscription, or you are not logged in.

A Theoretical Model for the Elastic-Plastic Behaviour of Spot Welded Joints

Journal Article
2009-01-0026
ISSN: 1946-3979, e-ISSN: 1946-3987
Published April 20, 2009 by SAE International in United States
A Theoretical Model for the Elastic-Plastic Behaviour of Spot Welded Joints
Sector:
Citation: ivio, F. and Ferracci, M., "A Theoretical Model for the Elastic-Plastic Behaviour of Spot Welded Joints," SAE Int. J. Mater. Manf. 2(1):30-39, 2009, https://doi.org/10.4271/2009-01-0026.
Language: English

Abstract:

An analytical procedure for the evaluation of the elasticplastic behavior of spot welded joints is presented. The procedure is based on a new theoretical model of spot weld region: a circular plate having variable thickness with a central rigid nugget. The closed-form solution allows to describe the displacement of a rigid nugget when an axial orthogonal load is applied on the plate while plasticity and moderately large deflections are present. The goal is to reach a reliable spot weld region model which can be used as the basis to develop a spot weld element in FE analysis even when plasticity and large deflections are in effect. The analytical results obtained by using the new general relations precisely match those obtained modelling spot weld area by FEA.