Numerical Study of Influence of Mechanical Heterogeneity on Cyclic Plastic Energy Dissipation of Plate with a Center Hole

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  • 円孔付き平板の繰り返し塑性変形による発熱に及ぼす機械的不均質の影響に関する解析的検討
  • エン アナツキ ヘイバン ノ クリカエシ ソセイ ヘンケイ ニ ヨル ハツネツ ニ オヨボス キカイテキ フキンシツ ノ エイキョウ ニ カンスル カイセキテキ ケントウ

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Abstract

Relation between nominal stress range and temperature increase at center-hole edge of plates with and without a weld bead was studied through combining elasto-plastic stress analysis under cyclic loading with heat conduction analysis of plastic energy dissipation. The temperature increases at the hole edge are relatively small in low nominal stress range, and begin to increase remarkably in higher nominal stress range. The temperature increase at the hole edge of the plate with a weld bead is little influenced by the plastic energy dissipation around the edge because of small plastic deformation around the edge especially in the weld bead.

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