弾性体の内部応力推定に対する逆問題解析手法の一応用

概要

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A complicated internal residual stress occurs in a structural member due to machining, welding or the like. To estimate the unknown residual stress in an nondestructive manner an inverse analysis based on the boundary element method is considered useful. It is reported in this paper that the unknown residual stress induced by weld or spot heating a part of the plate was estimated by the inverse analysis method in which the known boundary displacements and tractions around the plate. It is assumed that the residual stress was replaced with uniformly distributed body forces which direct to the center of the circle of the spot. Numerical computation of some example problems reveals that it is possible to effectively estimate the residual stress in a plate with sufficient accuracy by using this inverse analysis method.
一般社団法人日本機械学会の論文
1990-09-25