溶接シミュレーション援用による溶接変形・残留応力の逆問題解析手法の精度向上 : 第2報,設計への適用のための変形・応力推定

概要

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Recently, many analytical tools have been developed for the structural design and assessment of structural integrity. For welded structures, however, application of the welding simulation as a design tool is relatively limited due to its lack of verification characteristics. So, is necessary to develop a new analytical procedure for evaluation of the welding deformation and residual stresses. For this purpose authors have developed an inversed problem approach based on eigen-strain analysis, where further improvement of accuracy is desired. In this study, eigen-strain characteristics which reproduce both welding deformations and residual stresses are examined by utilizing welding simulations. Eigen-strain components that affect to a specific type of deformations are made clear. By using these results, welding deformations and residual stresses can be reproduced with selected eigen-strain components by image processing of welded plate surface before and after the weld.
2010-09-25