Finite element simulation of residual stresses and their measurement by contour method

✍ Scribed by N. Murugan; R. Narayanan

• Publisher: Elsevier Science
• Year: 2009
• Weight: 747 KB
• Volume: 30
• Category: Article
• ISSN: 0261-3069
• DOI: 10.1016/j.matdes.2008.08.041

✦ Synopsis

A three-dimensional transient thermo-mechanical simulation has been performed on a welded Tee-joint using the finite element method, to predict longitudinal residual stresses. The uncoupled thermomechanical simulation consists of two stages. The first stage involves the prediction of the complete thermal history of the weldment. The second stage involves the thermo-mechanical simulation on the basis of the results of the first stage. Temperature dependent thermal and mechanical properties were incorporated in the simulation. A relatively new contour method was used to experimentally validate the longitudinal residual stresses obtained by the thermo-mechanical simulation. The experimental results agree well with the simulated results of residual stresses.