High Effective FE Simulation Methods for Deformation and Residual Stress by Butt Welding of Thin Steel PlatesReport as inadecuate




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In order to proposehigh effective simulation using finite element method FEM for predictingdeformation and residual stress generated by one pass butt welding, a series ofnumerical analyses were carried out. By idealizing the movement of heatsource the instantaneous heat input method, the tendency of weldingout-of-plane deformation and the residual stress distribution could bepredicted. The computing time was around 9% of that by the precise model withconsidering the movement of heat source. On the other hand, applicability oftwo dimensional shell elements instead of generally used three dimensionalsolid elements was examined. The heat input model with considering thetemperature distribution in the thickness direction was proposed for the simulationby using the shell elements. It was confirmed that the welding out-of-planedeformation and residual stress could be predicted with high accuracy by themodel with shell elements and the distributed heat input methods. The computingtime was around 8% of that by the precise model with solid elements.

KEYWORDS

Welding Deformation, Residual Stress, Butt Welding, FEM, Shell Element

Cite this paper

Hirohata, M. and Itoh, Y. 2014 High Effective FE Simulation Methods for Deformation and Residual Stress by Butt Welding of Thin Steel Plates. Engineering, 6, 507-515. doi: 10.4236-eng.2014.69053.





Author: Mikihito Hirohata, Yoshito Itoh

Source: http://www.scirp.org/



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