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Lookup NU author(s): Professor Pengfei LiuORCiD
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
The welding deformation considerably plays a vital role in the production accuracy and efficiency of marinestructures. In this study, welding deformation due to three outside corner joints (with angles of 60, 70 and 140 degrees)used in an aluminum catamaran hull is evaluated by considering the length and welding speed parameters. Thedeformation is predicted via two numerical procedures based on finite element computations. Thermal-Elastic-Plastic (TEP) analysis is applied on local 3D solid models for each of the three outside corner joints to calculateinherent strain for global shell model of an aluminum catamaran to obtain deformation elastically based oninherent deformation theory. Validations of numerical results were performed by using metallographic observationsand welding distortion. For more accuracy the softening effect was investigated by Vickers Microhardnesstest. The results from both TEP and FE elastic analyses indicate reasonably good agreement withexperimental results. Besides, in the global shell model of the catamaran, out-of-plane welding deformation willoccur significantly near the maximum angle of outside corner joint (140-degree) where the maximum weldingdistortion is obtained. Along with the welding speed parameter has considerable influence on decreasingdistortion which results in reducing time-consuming and cost in the catamaran production stage.
Author(s): Honaryar A, Iranmanesh M, Liu P, Honaryar A
Publication type: Article
Publication status: Published
Journal: Ocean Engineering
Print publication date: 15/03/2020
Online publication date: 16/02/2020
Acceptance date: 30/10/2019
Date deposited: 18/02/2020
ISSN (print): 0029-8018
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