Numerical investigation of the effects of constraint design on 5XXX Al Alloy GTA Welding
Publish place: Iran International Aluminum Conference
Publish Year: 1391
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
IIAC02_060
تاریخ نمایه سازی: 12 اردیبهشت 1392
Abstract:
One of the most conventional approaches of quality control in metal weldments is the evaluation of residual stresses and distortion. Constraining the structure during welding, is the significant key parameter for optimizing the residual stress. In this research, an attempt was made to obtain the best welding constraint of 5XXX Al alloy lap joints during double pass GTAW. A 3-Dimentional finite element simulation was utilized for determining the effect of three different types of local U-shape Fixture (LUF) on residual stresses distributions and distortion. Considering sequentially coupled thermal-mechanical strategy, double ellipsoidal modelling of heat source and element death and birth technique were used in simulation. Thermocouple and LVDT’s set up were applied to validate thermal and mechanical results, respectively. Results provided by simulation show acceptable agreement with experimental values. According to results obtained from simulation, suitable LUFs selected based on optimum residual stresses and distortion in welding the aluminium structure.
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Authors
Mohsen Shateryan
Department of Material Engineering, Faculty of Engineering Ferdowsi University of Mashhad, Mashhad, P.O. Box: ۹۱۷۷۹۴۸۹۷۴, Iran
Abolfazl Rezaee-Bazzaz
Department of Material Engineering, Faculty of Engineering Ferdowsi University of Mashhad, Mashhad, P.O. Box: ۹۱۷۷۹۴۸۹۷۴, Iran
Mohsen Haddad Sabzevar
Department of Material Engineering, Faculty of Engineering Ferdowsi University of Mashhad, Mashhad, P.O. Box: ۹۱۷۷۹۴۸۹۷۴, Iran
Behroz Naderi
sazman sanaye daryaee, Mashhad, Iran
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