摘要
分析表明 ,高约束场的裂纹尖端前方某个扇形域是一个以弹性变形为主的弹塑性区 ,试件约束的下降就是此区内弹性能比重的相对下降 。
The elastic strain energy density prevails in the forward sector ahead of the crack of the high constraint fields though it is a plastic zone in appearance. The lower constraint means the more loss of the elastic energy density in the forward sector, and the tougher fracture mechanism as well as the higher value of Jc.
出处
《机械强度》
EI
CAS
CSCD
北大核心
2001年第1期120-122,共3页
Journal of Mechanical Strength
关键词
HRR奇异场
应变能密度
局部弹性场
约束
断裂参量
HRR singularity
Energy density
Local elastic field
Constraint
Fracture parameter
