摘要
简要综述了近年来微米尺度金属试样的实验结果及尺度效应现象、关于考虑尺度效应的唯象学理论——塑性应变梯度理论、关于金属/陶瓷界面断裂的宏、微观理论结果的差异及尺度效应、关于薄模脱胶问题的尺度效应及近年来提出和发展的几种材料细观结构的断裂过程区模型。较系统地刻划了固体力学尺度效应宏微观相互关联的理论和方法。
A concise review for the research advances of the macroscopic/ microscopic theories of linkage on size effects of solids is presented in the paper. The main considerations include the following cases. Firstly, the recent experimental results and size effect phenomena of pure metal specimens with micro-scale size are summarized. Secondly, strain gradient plasticity theory, which is a size effect consideration and a phenomenological theory is introduced. Thirdly, the difference between macroscopic theory results and microscopic theory results for metal/ceramic interface cracking and size effects are discussed. Fourthly, size effects in thin film delamination are proposed. Finally, the commonly used several fracture process zone models with microstructures are reviewed. The contents described above delineate the linkage of macroscopic/ microscopic theories for size effects of solids systematically.
出处
《中国科学基金》
CSCD
2000年第4期221-224,共4页
Bulletin of National Natural Science Foundation of China
关键词
尺度效应
塑性应变梯度理论
薄膜脱胶
固体力学
size effects, strain gradient plasticity, thin film delamination, fracture process zone models
