Vol. 2, No. 5, 2007

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ISSN: 1559-3959
The simulation of residual stresses in friction stir welds

Zhao Zhang and Hongwu Zhang

Vol. 2 (2007), No. 5, 951–964
Abstract

A numerical model is developed to investigate energy dissipations and residual stress distributions in friction stir welds. Results indicate that the maximum longitudinal residual stress can be increased with the increase of the translational velocity of the pin. But the variation of the angular velocity of the pin does not significantly affect the residual stress distributions. Energy dissipation in friction is increased with the increase of the angular velocity of the pin. However, with the increase of the translational velocity of the pin the plastic dissipation of energy is increased and the frictional dissipation is decreased.

Keywords
friction stir welding, residual stress, finite element method, energy dissipation
Milestones
Received: 8 August 2006
Revised: 7 November 2006
Accepted: 27 February 2007
Published: 1 July 2007
Authors
Zhao Zhang
Department of Engineering Mechanics
State Key Laboratory of Structural Analysis for Industrial Equipment
Dalian University of Technology
Dalian 116024
China
Hongwu Zhang
Department of Engineering Mechanics
State Key Laboratory of Structural Analysis for Industrial Equipment
Dalian University of Technology
Dalian 116024
China