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http://dx.doi.org/10.7735/ksmte.2012.21.6.938

A Study on Characteristic of Residual Stresses in a wind Tower Using the Tandem Circumferential Welding Process  

Kim, Ji Sun (한국생산기술연구원)
Kim, In Ju (한국생산기술연구원)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.21, no.6, 2012 , pp. 938-945 More about this Journal
Abstract
This research proposes FEM analysis for Tandem welding process used in wind tower and predicts optimal welding process to improve the stability of welded structures. Three dimensional elasto-plastic analyses are employed to evaluate thermo-mechanical behavior of residual stress and deformation during Tandem welding for different distance between two touches. To confirm the thermal distribution, Goldak's ellipse heat source model and the real size wind tower pipe model are utilized. Four different analyses are being performed, where in each case the distance between two electrode torches is being changed and residual stress and welding deformation are predicted. Depending on base material state, each case is divided into: Liquid (100mm), Austenite+Liquid (200mm), Austenite+Cementite (400mm), Pearlite+Cementite (800mm).
Keywords
Tandem welding; SAW; Residual stress; Electrode distance; Wind tower;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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