Paper Title:
Numerical Simulation of Distortion Control by Static Thermal Tensioning in Welding of Thin Aluminum Alloy Plates
  Abstract

Residual distortion is a serious problem associated with welding thin aluminum alloy plates. As a distortion control technique static thermal tensioning has been used for many years. Owing to the insufficient understanding of its control mechanism and parameter influence, its application cannot always yield ideal results. So finite element analysis was performed. Based on the simulation results, presetting a saddle-shaped temperature field during welding can significantly reduce longitudinal inherent shrinkage strain in the weld and its adjacent zones, which will then reduce residual stresses and distortion. Temperature difference between the side and central zones is a key parameter and with its increase distortion reduction can be improved. Postweld thermal tensioning can cause certain plastic tensioning, but its effect cannot compare to that of a preset one. These numerical simulation findings were verified finally by experimental investigation.

  Info
Periodical
Materials Science Forum (Volumes 475-479)
Main Theme
Edited by
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Pages
3263-3266
DOI
10.4028/www.scientific.net/MSF.475-479.3263
Citation
S. Q. Guo, W. L. Xu, H. Yuan, W. H. Gu, X. T. Tian, "Numerical Simulation of Distortion Control by Static Thermal Tensioning in Welding of Thin Aluminum Alloy Plates", Materials Science Forum, Vols. 475-479, pp. 3263-3266, 2005
Online since
January 2005
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$32.00
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