时间相关的含缺陷材料的流变破坏理论

含缺陷物体的与时间相关的失效过程是一个热力学开放的，远离平衡态的系统，失效过程中发生耗散结构的自组织现象，不同尺度上耗散结构的自相似性可供从微观过度到细观和宏观，基于缺陷演化过程国局域温度场和热磁效应的实验研究，从统一的宏、细、微观层次体系出发。研究了与时间相关的缺陷体的失效过程，结果表明。这个失效过程并非纯力学过程，其中的热力耦合和热磁效应不容忽略。

The Rheo-Failure Theory of Time-Dependent Materials Containing Defects

The failure process of time - dependent material containing defects may be considered as a thermodynami-cally open, far - from - equilibrium system in which the self - organization of dissipative structures takes place. The self - similarity of dissipative structures on different scaling levels provides the opportunity for transition from micro - to meso and macro - levels. In this paper, based on the experimental results of local temperature field and pyromagnetic effect formed in the evolution period of defects, the failure process of time - dependent material containing defects have been studied from a unified standpoint of macro - /meso - /microscopic stratum system. It is proved that this failure process is not only a pure mechanical process, the thermo - mechanical coupling effect and pyromagnetic effect are not negligible.