Effect of thermal input on finite element predictions of welding residual stresses
Effect of thermal input on finite element predictions of welding residual stresses
A two-dimensional finite element simulation of a welding process is developed for predicting temperature histories and residual stresses in a structural steel butt-welded joint. The purpose of the simulation presented in this paper is the assessment of the effect of uncertainties in thermal material, loading and constraint input on both the thermal and mechanical analysis predictions. The model is validated by comparison with previously welded and tested specimen with published residual stresses measurements. Residual stress results are not sensitive to the thermal analysis input even if the latter has significant influence on temperature distribution. Modelling boundary conditions for both thermal and stress analyses, was identified as a key factor affecting predictions of residual stresses and distortion.
1976-1983
Wu, Ai Hui
a5ea4b10-7676-441d-9979-7d71b6e7f0b0
Syngellakis, Stavros
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Mellor, B.G.
2b13b80f-880b-49ac-82fe-827a15dde2fe
November 2011
Wu, Ai Hui
a5ea4b10-7676-441d-9979-7d71b6e7f0b0
Syngellakis, Stavros
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Mellor, B.G.
2b13b80f-880b-49ac-82fe-827a15dde2fe
Abstract
A two-dimensional finite element simulation of a welding process is developed for predicting temperature histories and residual stresses in a structural steel butt-welded joint. The purpose of the simulation presented in this paper is the assessment of the effect of uncertainties in thermal material, loading and constraint input on both the thermal and mechanical analysis predictions. The model is validated by comparison with previously welded and tested specimen with published residual stresses measurements. Residual stress results are not sensitive to the thermal analysis input even if the latter has significant influence on temperature distribution. Modelling boundary conditions for both thermal and stress analyses, was identified as a key factor affecting predictions of residual stresses and distortion.
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Published date: November 2011
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 350140
URI: http://eprints.soton.ac.uk/id/eprint/350140
PURE UUID: a7ccdc4a-64aa-410e-9f8d-81b80a3ab33c
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Date deposited: 18 Mar 2013 16:19
Last modified: 14 Mar 2024 13:21
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Author:
Ai Hui Wu
Author:
Stavros Syngellakis
Author:
B.G. Mellor
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