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Metals 2016, 6(9), 214; doi:10.3390/met6090214

Welding Distortion Prediction in 5A06 Aluminum Alloy Complex Structure via Inherent Strain Method

1,2,* , 1
,
1
and
1,2
1
School of Mechatronics Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
2
Center for Robotics, University of Electronic Science and Technology of China, Chengdu 611731, China
*
Author to whom correspondence should be addressed.
Academic Editor: Nong Gao
Received: 9 June 2016 / Revised: 27 July 2016 / Accepted: 11 August 2016 / Published: 6 September 2016
(This article belongs to the Special Issue Aluminum Alloys)
View Full-Text   |   Download PDF [7482 KB, uploaded 6 September 2016]   |  

Abstract

Finite element (FE) simulation with inherent deformation is an ideal and practical computational approach for predicting welding stress and distortion in the production of complex aluminum alloy structures. In this study, based on the thermal elasto-plastic analysis, FE models of multi-pass butt welds and T-type fillet welds were investigated to obtain the inherent strain distribution in a 5A06 aluminum alloy cylindrical structure. The angular distortion of the T-type joint was used to investigate the corresponding inherent strain mechanism. Moreover, a custom-designed experimental system was applied to clarify the magnitude of inherent deformation. With the mechanism investigation of welding-induced buckling by FE analysis using inherent deformation, an application for predicting and mitigating the welding buckling in fabrication of complex aluminum alloy structure was developed. View Full-Text
Keywords: welding distortion; residual stress; inherent strain method welding distortion; residual stress; inherent strain method
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zeng, Z.; Wu, X.; Yang, M.; Peng, B. Welding Distortion Prediction in 5A06 Aluminum Alloy Complex Structure via Inherent Strain Method. Metals 2016, 6, 214.

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