Numerical Investigation of Effect of Preheating on Thermal Stresses of Submerged Arc Welding Pipes with FEM
Publish place: 27th Annual Conference of Mechanical Engineering
Publish Year: 1398
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ISME27_721
تاریخ نمایه سازی: 8 مرداد 1398
Abstract:
This paper presents a three dimensional numerical analysis of heat transfer and thermal stresses in the submerged arc welding (SAW) of pipes used in the oil and gas pipelines network. A finite element analysis is performed using the ANSYS Parametric Design Language (APDL) provided by ANSYS commercial FE code. In this analysis, preheating of pipes is modeled. Also, the effect of preheating condition, which consist of thermal stresses, are considered in the analysis. The model provides a full description of the temperature distribution on pipe with preheating pipe and without preheating, as well as calculation of different thermal stresses. It is found that the quality of the submerged arc welding is affected by the preheating. Results show that with utilized preheating in pipes, thermal stressesdecrease. For oil and gas pipeline networks, it is suggested to use pipe with preheating to increase the strength.
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Authors
M Rajabpour
Young Researchers and Elite Club, Shahmirzad Branch, Islamic Azad University, Shahmirzad, Iran.
H Babaei
Department of Mechanical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
M.R Eslami
Department of Mechanical Engineering, Amirkabir University of Technology, Tehran