Influence of heat transfer types on residual stress distribution of a welded plate using finite element

Hosseinzadeh, A.; Rezaeiha, M.

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Engineering Solid Mechanics

ISSN 2291-8752 (Online) - ISSN 2291-8744 (Print) Quarterly Publication Volume 1 Issue 3 pp. 91-98 , 2013

Influence of heat transfer types on residual stress distribution of a welded plate using finite element Pages 91-98 Download PDF

Authors: A.R. Hosseinzadeh, Mohammad Rezaeiha

Keywords: Convection, Finite element, Heat transfer, Radiation, Welding

Abstract: Generation of residual stress and structure deformation are the most important problems in the process of structure welding. Residual stresses inside and around the welded joints are harmful for integrity and proper functioning of the welded part. Tensile residual stresses near the weld zone may cause in developing brittle fracture, reduction of fatigue life or crack propagation caused by corrosion stresses. Welding residual stresses may even reach the yield stress of the part and can affect the thermal or mechanical working properties of it. Different thermal and mechanical approaches have been developed in the past in order to reduce these residual effects. Thus, both radiative and convective heat transfer methods have important roles in distribution of residual stresses during the welding process. In this study, convection and radiation effects on distribution of residual stress inside a welded part have been investigated for three different cases. In the first case, convection heat transfer was ignored and only effect of radiation on residual stress distribution was considered. In the second case, just the convection heat transfer applied on the model during the welding process. In another case, effects of radiation and convection heat transfer methods were investigated, simultaneously. Results of the current study showed that both radiative and convective heat transfer mechanisms have a significant share on distribution of residual stresses inside the welded part. It was also shown that the share of convection is greater than that of radiation heat transfer method.

How to cite this paper

 Hosseinzadeh, A & Rezaeiha, M. (2013). Influence of heat transfer types on residual stress distribution of a welded plate using finite element.Engineering Solid Mechanics, 1(3), 91-98.

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