余弦波残留応力場に導入された切欠きによる応力集中

概要

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The stress concentrations of plates with circular holes and notches in cosine residual stress fields were investigated by the finite element analysis.When the plate had a central circular hole, the residual stress at the bottom of the hole remained always tensile, even though the initial (no-hole)residual stresses at that point were compressive.In case of the plate with a circular hole in higher order cosine residual stress fields, the concentrated stresses at the concentrated stresses at the bottom of the hole repeatedly followed with retardation the sign of the initial residual stress.The stress concentration problems due to welding residual stresses were studied by these cosine residual stress results using the superposition principle combined with Fourier's series expansion.The results of the superposition agreed quite well with the analytical results using the original welding residual stress distribution.
社団法人日本機械学会の論文
2000-01-25