指数硬化異材界面端の弾塑性応力特異性解析法の提案

概要

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A theoretical method to evaluate the elastic-plastic stress singularity at the interface edge of bonded power-law materials is proposed, based on the interative approach developed in this study. It is found that the elastic plastic stress singularity depends only on the bonding angle and the hardening exponent of the composed material which has the larger hardening exponent. The smaller the hardening exponent is, the stronger the stress singularity becomes, Moreover, the elastic plastic stress singularity disappears when the bonding angle is smaller than 45°. The singularity concides with that of an interface crack when the bonding angle approaches to 180° Through the comparison with numerical results obtained by the elastic-plastic boundary element analysis, it is proved that the interative method proposed in this study is accurate enough and very efficient.
一般社団法人日本機械学会の論文
2000-12-25