弾塑性変形状態における音弾性理論

概要

論文の詳細を見る
In this paper, we have attempted to formulate precisely a generalized acoustoelastic theory by extending the theory proposed by Kobayashi [1987], which was derived to evaluate the acoustoelastic effects of ultrasonic waves induced by slight orthotropy in elasticity and plastic anisotropy growth in the plastically deformed solids. Mereover, in order to examine the accuracy of the proposed theory, the numerical calculations of the transverse wave velocity changes in elastoplastic range were carried out and compared with the experimental data on a commercially available pure aluminum specimen subjected to uniaxial tension. The good agreement between theoretical and experimental results indicates that the plastic anisotropy is closely related to the acoustoelastic effects through the elastoplastic coupling strain-rate induced by the vertex-like yield effects at the corner of the yield surface.
一般社団法人日本機械学会の論文
1989-09-25