摘要
本文利用作者改进的等效夹杂理论和内变量理论，研究了晶须增韧陶瓷基复合材料中随机分布微裂纹的演化规律及其对材料力学性能的影响，同时考虑了热残余应变、晶须含量及长径比的影响，预报了材料的模量、非线性起始点、材料强度及非线性本构关系，给出了许多有意义的结论．
The equivalent inclusion method and internal varable theory are employed to research the evolution of misoriented microcracks and their influence on the mechanic behaviours of whisker/ceramics composite materials. Meanwhile, the residual thermo-strain, the fraction and aspects of whiskers are considered and the effective modulus,the nonlinear initial load,strength and constitutive relation are estimated. Some important results are given.
出处
《固体力学学报》
CAS
CSCD
北大核心
1995年第2期106-113,共8页
Chinese Journal of Solid Mechanics
基金
博士点基金
华南理工大学基金
关键词
裂纹
陶瓷基
复合材料
强度
本构关系
晶须增韧
whisker
microcrack
ceramic
matrix composite material (CMC )
strength
nonlinear constitutive relation
