### Abstract

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 language | English |
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Title of host publication | Unknown Host Publication Title |

Editors | T. Kawamoto, Y. Ichikawa |

Publisher | A. A. Balkema |

Pages | 469-480 |

Number of pages | 12 |

Volume | 1 |

ISBN (Print) | 9061915813 |

Publication status | Published - 1985 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Engineering(all)

### Cite this

*Unknown Host Publication Title*(Vol. 1, pp. 469-480). A. A. Balkema.