摘要
强化和弱化性质在岩石变形过程中对立统一，分别或同时主导了应力及时间效应下形变特征．在上地壳温压条件下，弱化和强化的微细观机制主要是裂纹扩展和位错滑移及成核．本文在关于大理岩等应变率循环加载全过程的实验结果基础上，通过含有强化弱化函数的弹粘塑模型与无穷个弹簧连接块并联的力学物理模型，建立和描述了大理岩的流变本构关系．根据该模型．可由等应变率的实验结果，预测出蠕变曲线．
Hardening and Weakening are not only opposite, but also integral, during deformation process. Under temperature and pressure of upper crust, their micro-mechanisms are mainly inferred as growth of crack, sliding of dislocation and nucleation. This paper, on base of experiment results of constant strain rate cycle lording to marble, sets up and describes rheological constitutive model of marble, by introducing both viso-plastic element with hardening and weakening function and infinite elastics-linked parallely blocks. Creep curve is calculated from the model.
出处
《地球物理学进展》
CSCD
1999年第1期64-68,共5页
Progress in Geophysics
基金
中国科学院地球物理研究所高温高压地球动力学开放实验室资金
