T. Kyoya, Y. Ichikawa, T. Kawamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

31 Citations (Scopus)


In this paper, a new concept for rock mass involving distributed discontinuities in the body is proposed, so called the damage mechanics theory for rock mass. The effect of distributed discontinuities is characterized with a second-order symmetric tensor (the damage tensor), which was originally proposed by S. Murakami & N. Ohno in their creep damage theory for metal. The damage tensor is built in the system of a continuum mechanics theory, and plays a role of transformation operator for the Cauchy stress. Since the damage tensor is introduced as a field variable in addition to stress and strain, one may need one more field equation which governs the propagation of damage. We propose a form of the propagation equation. The theory is applied to a few typical problems and the results are compared with ones of other numerical schemes.

Original languageEnglish
Title of host publicationUnknown Host Publication Title
EditorsT. Kawamoto, Y. Ichikawa
PublisherA. A. Balkema
Number of pages12
ISBN (Print)9061915813
Publication statusPublished - Dec 1 1985
Externally publishedYes

Publication series


ASJC Scopus subject areas

  • Engineering(all)

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    Kyoya, T., Ichikawa, Y., & Kawamoto, T. (1985). DAMAGE MECHANICS THEORY FOR DISCONTINUOUS ROCK MASS. In T. Kawamoto, & Y. Ichikawa (Eds.), Unknown Host Publication Title (pp. 469-480). A. A. Balkema.