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Title: High performance computation of residual stress and distortion in laser welded 301L stainless sheets

Journal Article · · Finite Elements in Analysis and Design
 [1];  [2];  [3];  [3];  [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Osaka Univ., Mihogaoka, Ibaraki, Osaka (Japan). Joining and Welding Research Inst.
  3. Harbin Inst. of Technology, Harbin (China). State Key Lab. of Advanced Welding and Joining

Transient thermo-mechanical simulation of stainless plate laser welding process was performed by a highly efficient and accurate approach-hybrid iterative substructure and adaptive mesh method. Especially, residual stress prediction was enhanced by considering various heat effects in the numerical model. The influence of laser welding heat input on residual stress and welding distortion of stainless thin sheets were investigated by experiment and simulation. X-ray diffraction (XRD) and contour method were used to measure the surficial and internal residual stress respectively. Effect of strain hardening, annealing and melting on residual stress prediction was clarified through a parametric study. It was shown that these heat effects must be taken into account for accurate prediction of residual stresses in laser welded stainless sheets. Reasonable agreement among residual stresses by numerical method, XRD and contour method was obtained. Buckling type welding distortion was also well reproduced by the developed thermo-mechanical FEM.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1427665
Journal Information:
Finite Elements in Analysis and Design, Vol. 135, Issue C; ISSN 0168-874X
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 44 works
Citation information provided by
Web of Science

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Cited By (6)

Numerical calculation and experimental measurement of temperatures and welding residual stresses in a thick-walled T-joint structure journal January 2020
Residual stress measurement of Al/steel dissimilar friction stir weld journal March 2019
The influence of process parameters on the distribution of residual stresses in magnetically impelled arc welded joints journal October 2018
On the convergence of solid meshes for the prediction of part distortions due to residual stresses
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Parameter optimization and characterization of environmental friendly aluminium hybrid metal matrix composites journal September 2019