INVESTIGATION OF BUCKLING DISTORTION IN WELDING OF A THIN WALL ALUMINUM BUTT JOINT
Publish place: 14th Annual Conference of Mechanical Engineering
Publish Year: 1385
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ISME14_485
تاریخ نمایه سازی: 1 فروردین 1386
Abstract:
In this paper, global welding buckling distortion of a thin wall aluminum butt joint is investigated. To determine longitudinal residual stresses, a thermo-elastoplastic model is employed; analysis of thermal model and elastic-viscoplastic (Anand) model are decoupled. By using birth and death element method and time dependent model, molten puddle motion (speed of welding) is modeled. Three dimensional nonlinear-transient heat flow analysis has been used to obtain temperature distribution. By applying thermal results and using three dimensional Anand elastic-viscoplastic model, stress and deformation distributions are obtained. Residual stresses are applied on a structural model and by using eigenvalue methods, global buckling instability of butt welded joint is determined. The result of buckling investigation in the numerical model is compared with the result of an experiment.
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Authors
Asle Zaeem
M.Sc. Student, Department of Mechanical Engineering, Engineering School, Shiraz University, Shiraz, Iran
Nami
Assistant Professor, Department of Mechanical Engineering, Engineering School, Shiraz University, Shiraz, Iran
Kadivar
Professor, Department of Mechanical Engineering, Engineering School, Shiraz University, Shiraz, Iran
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