本文从细观力学角度研究了高脆性材料亚临界裂纹扩展机制。
The subcritical crack growth mechanism in brittle materials is studied from the viewpoint of mesomechanics.
从细观结构入手，计算材料的等效弹性模量可大大降低计算量。
Studying the microstructure and calculating the effective elastic modulus of the structure can effectively solve this problem.
从细观断裂力学和损伤力学的观点出发，解释了该规律的物理意义。
The physical meanings of the formula presented are explained from the standpoint of submacroscopic fracture mechanics and damage mechanics.
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