板幅・板厚方向に分布する圧縮残留応力場の穴あけに伴う残留応力再分布と変形挙動

概要

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Residual-stress redistribution and the resulting deformation during the formation of a full-depth hole in a plate with residual-stress distribution along the width and the thickness were elastically calculated using the three-dimensional finite-element method. The initial residual stress was introduced into each element through the intermediary of the most suitable eigen-strain distribution in such a way that its redistribution due to the surface removal accorded with the X-ray residual stresses on the surface removed successively by electropolishing. The experimental results of the residual-stress redistribution and the resulting deformation due to hole cutting on the electric discharge machine were in good agreement with the analytical results. It was also found in the analysis that the shape of the hole was influenced by the residual stress released in the process of creating the hole.
社団法人日本機械学会の論文
1990-08-25