### Abstract

The microplane model is used in this paper to describe the time-dependent (creep) behavior of cohesive soils (clays). The constitutive equations are defined on each of a set of microplanes which cover all possible spatial orientations, with a kinematic constraint to the macroscopic response. The total strain components are assumed to be the sum of a time-independent and a time-dependent (creep) contribution. The creep evolution laws are defined within the framework of the rate process theory (activation energy principle), in which the strain rates depend on the current stress level, temperature and time. The model can reproduce instantaneous as well as time-dependent behavior, for drained or undrained conditions. Numerical results show good qualitative agreement with laboratory test data taken from the literature. The paper closes by discussing the implementation of the model in finite element codes.

Original language | English (US) |
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Title of host publication | Mechanics Computing in 1990's and Beyond |

Editors | Hojjat Adeli, Robert L. Sierakowski |

Publisher | Publ by ASCE |

Pages | 1224-1228 |

Number of pages | 5 |

ISBN (Print) | 0872628043 |

State | Published - Jan 1 1991 |

Event | ASCE Engineering Mechanics Specialty Conference - Columbus, OH, USA Duration: May 20 1991 → May 22 1991 |

### Other

Other | ASCE Engineering Mechanics Specialty Conference |
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City | Columbus, OH, USA |

Period | 5/20/91 → 5/22/91 |

### ASJC Scopus subject areas

- Engineering(all)

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## Cite this

*Mechanics Computing in 1990's and Beyond*(pp. 1224-1228). Publ by ASCE.