Theoretical Study of Influence of Plastic Deformation upon Acoustoelastic Effect : An Acoustic Theory for Measuring Stress Distributions in Slightly Orthotropic Materials

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概要

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• In the present paper, the acoustical effects caused by elasto-plastic finite deformations in slightly orthotropic materials are theoretically investigated using the theories of finite deformations and plasticity in which the plastic strain increments are expressed with stress deviations and their increments. From analytical results, it is found that the expressions for the elastic-plastic strain-velocity relations of acoustic waves propagating in slightly orthotropic materials can be derived skillfully with aid of Jaumann co-rotational rate and can be reduced to the theoretical results derived by Iwashimizu and Kubomura in the elastic state. Further in order to remove the previous discrepancies between the theoretical results and the experimental ones about the influence of plastic deformations upon the acoustoelastic effects, the author discusses the influence of the deviation of stress increments on the plastic strain increments.

• 一般社団法人日本機械学会の論文

著者

• Kobayashi Michiaki

  Hachinohe Institute Of Technology

関連論文

• Three-dimensional Stress Analysis of a Rectangular Cantilever Plate Using an Extended Love's Moderately Thick Plate Theory
• Theoretical Study of Influence of Plastic Deformation upon Acoustoelastic Effect : An Acoustic Theory for Measuring Stress Distributions in Slightly Orthotropic Materials

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