摘要
本文着重讨论疲劳损伤演化方程应满足的条件,指出损伤演化方程不仅必须遵循热力学准则,还应满足一定的物理条件.如果忽略了这一点,可能导致严重的误差,并造成很大的分散性.
The necessary condition of a fatigue damage evolution equation is discussed in the present paper. It is proposed that a damage evolution equation must not only follow thermodynamic laws,but also satisfy a certain physical requirement (?)D^2/(?)n(?)σ>0. If these requirements can not be satisfied,serious error and great scatter will possibly appear when the damage equation is uesd to evaluate fatigue damage or predict fatigue life.
出处
《应用力学学报》
CAS
CSCD
北大核心
1992年第4期66-69,138,共4页
Chinese Journal of Applied Mechanics
关键词
疲劳损伤
损伤模型
损伤演化
fatigue damage
damage model
damage evolution
thermodynamics condiction
