摘要
本文采用一种考虑相交剪切变形的陶瓷材料本构关系，对平面应变Ⅰ型定常扩展裂纹尖端场进行渐近分析．给出了裂纹尖端附近环形域内的应力、速率分布以及应力奇异性指数．对不同材料参数下的变化规律进行了详细的分析和讨论．
based on a constitutive law which includes the shear components of transformation plasticity, the asymptotic solutions to near-tip fields of plane-strain mode Ⅰ steadity propagating cracks in transformed ceramics are obtained for the case of linear isotropic hardening, The stress singularity, the distributions of stresses and velovities at the crack tip are determined for various material paramiters. The factors influencing the near-tip fields are discussed in detail.
出处
《应用数学和力学》
CSCD
北大核心
1997年第7期639-646,共8页
Applied Mathematics and Mechanics
基金
国家自然科学基金
关键词
相变增韧陶瓷
扩展裂纹
结构陶瓷
裂纹尖端场
transformation toughening ceramics
shear effect
crack growth, asymptotic method
