Toggle Main Menu Toggle Search

Open Access padlockePrints

Numerical and experimental investigations of outside corner joints welding deformation of an aluminum autonomous catamaran vehicle by inherent strain/deformation FE analysis

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.

Publication metadata

Author(s): Honaryar A, Iranmanesh M, Liu P, Honaryar A

Publication type: Article

Publication status: Published

Journal: Ocean Engineering

Year: 2020

Volume: 200

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

Publisher: Elsevier


DOI: 10.1016/j.oceaneng.2020.106976


Altmetrics provided by Altmetric