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Title: Efficient Simulation of Welding Distortion in Large Structures and Its Reduction by Jig Constraints

Abstract

Two large construction machinery structures were welded separately with and without jig constraints. The welding distortion of the entire structure was measured by a 3D coordinate measuring system and simulated by elastic FEM using the inherent deformation method. To obtain an accurate inherent deformation, a thermal elastoplastic FE analysis of simple one-side fillet joints with and without jig constraints was performed. Efficient simulation of welding distortion in large structures was accomplished by applying inherent deformation in a localized region, and the effect of jig constraint on the reduction of welding distortion was clarified. The computation of inherent deformation, the weld zone definition and the conversion of inherent deformation into inherent strain were automated. Measured and computed welding distortions in large structures had a good correspondence with respect to both tendency and magnitude. Further investigation of jig configuration was performed for enhanced reduction of welding distortion. Alternative controlling techniques for common welded structures were also addressed.

Authors:
 [1];  [2]
  1. Osaka Univ. (Japan); JSOL Corp., Osaka (Japan)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1474543
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Materials Engineering and Performance
Additional Journal Information:
Journal Volume: 26; Journal Issue: 11; Journal ID: ISSN 1059-9495
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Ma, Ninshu, and Huang, Hui. Efficient Simulation of Welding Distortion in Large Structures and Its Reduction by Jig Constraints. United States: N. p., 2017. Web. doi:10.1007/s11665-017-3000-4.
Ma, Ninshu, & Huang, Hui. Efficient Simulation of Welding Distortion in Large Structures and Its Reduction by Jig Constraints. United States. doi:10.1007/s11665-017-3000-4.
Ma, Ninshu, and Huang, Hui. Mon . "Efficient Simulation of Welding Distortion in Large Structures and Its Reduction by Jig Constraints". United States. doi:10.1007/s11665-017-3000-4. https://www.osti.gov/servlets/purl/1474543.
@article{osti_1474543,
title = {Efficient Simulation of Welding Distortion in Large Structures and Its Reduction by Jig Constraints},
author = {Ma, Ninshu and Huang, Hui},
abstractNote = {Two large construction machinery structures were welded separately with and without jig constraints. The welding distortion of the entire structure was measured by a 3D coordinate measuring system and simulated by elastic FEM using the inherent deformation method. To obtain an accurate inherent deformation, a thermal elastoplastic FE analysis of simple one-side fillet joints with and without jig constraints was performed. Efficient simulation of welding distortion in large structures was accomplished by applying inherent deformation in a localized region, and the effect of jig constraint on the reduction of welding distortion was clarified. The computation of inherent deformation, the weld zone definition and the conversion of inherent deformation into inherent strain were automated. Measured and computed welding distortions in large structures had a good correspondence with respect to both tendency and magnitude. Further investigation of jig configuration was performed for enhanced reduction of welding distortion. Alternative controlling techniques for common welded structures were also addressed.},
doi = {10.1007/s11665-017-3000-4},
journal = {Journal of Materials Engineering and Performance},
issn = {1059-9495},
number = 11,
volume = 26,
place = {United States},
year = {2017},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
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