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1報,ビードフラッシュ法への適用

概要

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Recently, the design by analysis has been introduced. Concerning structural integrity assessment of the welding structures, however, application of the welding simulation as a design tool is relatively limited due to its lack of verification characteristics. So, it 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. To solve this problem, a concept to utilize the welding simulation is proposed to make clear eigen-strain characteristics that affects the inverse analysis to assess welding deformations and residual stresses. Also, its utility is confirmed by applying it to "the bead flush method" that is useful to assess the residual stresses during in-service inspection non-destructively.
2010-07-25