Deformation and failure of rocks under 'weak' cyclic loading and incremental elasto-plasticity theory

Yasuaki Ichikawa, Takashi Kyoya, Omer Aydan, Kazuhito Yoshikawa, Toshikazu Kawamoto, Naohiko Tokashiki

研究成果: Article査読

抄録

This paper presents experimental and theoretical studies of the deformation and failure behaviors of typical soft and hard rocks during conventional triaxial tests under monotonic and 'weakly' cyclic loadings. These materials show the dilation characteristics at lower confining pressures and the brittle-ductile transition. The authors present a non-associated plasticity theory using a dilatancy function for plastic behavior under monotonic loading, and an extended multi-response theory for elasto-plastic behavior under 'weakly' cyclic loading. In these approaches, the authors treat only the strain-hardening response of geomaterials as the material behavior and not the strain-softening response, since the softening is a structural phenomenon rather than a material characteristic. The response functions are represented by Laplace Transforms The response models are applied to simulate the behavior of Oya-tuff under monotonic loading with nonlinear plastic response, and the behaviors of Funyu-tuff and granite under cyclic loading with nonlinear elastic and plastic responses, respectively.

本文言語English
ページ(範囲)273-326
ページ数54
ジャーナルMemoirs of the Faculty of Engineering, Nagoya University
40
2
出版ステータスPublished - 1988 12月 1
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)

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