Investigation of Global Buckling Distortion in Welding of a Thin Wall Aluminum T Joint

Abstract

In this paper global welding buckling distortion of a thin wall aluminum T joint is investigated. A thermo-elastoplastic model is employed to determine longitudinal residual stresses; analysis of thermal model and elastic-viscoplastic (Anand) model are decoupled. Molten puddle motion (speed of welding) is modeled by using birth and death element method and time dependent model. Three dimensional nonlinear-transient heat flow analysis has been used to obtain temperature distribution, and then by applying thermal results and using three dimensional Anand elastic-viscoplastic model, stress and deformation distributions are obtained. By applying residual stresses on a structural model and using eigenvalue methods, global buckling instability of the welded structure is determined. Some experiments are done for validating the numerical results.

Meeting Name

10th International Conference on Aluminium Alloys (2006: Jul. 9-13, Vancouver, BC, Canada)

Department(s)

Materials Science and Engineering

Keywords and Phrases

Anand viscoplastic model; Global buckling distortion; Molten puddle motion; Aluminum alloys; Buckling; Elastoplasticity; Finite element method; Heat transfer; Residual stresses; Welds; Thin walled structures; 3D finite element model; Anand viscoplastic model; Birth and death element; Global buckling; Welding

International Standard Book Number (ISBN)

978-0878494088

International Standard Serial Number (ISSN)

0255-5476

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2006 Trans Tech Publications, All rights reserved.

Publication Date

01 Jan 2006

Link to Full Text

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