Modeling of Inclined Crack Growth under Creep Conditions
The modeling of subcritical growth of inclined crack under creep condition is considered. In the first part of this paper the stress state near the tip of inclined crack for power creep law in the cases of plane stress and plane strain is calculated. To calculate the stress state near the tip of an inclined crack the Airys stress function is used. The resulting nonlinear fourth order differential equation is formulated as two-point boundary value problem and is solved by shooting and Newtons methods. The modeling of creep crack growth is based on Rabotnov-Kachanov damage theory and the criterion of crack growth ω=1 at the distance d from the crack tip, calculated for equivalent or maximum stress. The crack growth rate and the crack trajectory are calculated both for plane stress and plane strain and for n = 1, 3, 5, 7 and considered in the second part of this paper.
inclined crack creep stress distribution.
Vladimir I. Astafiev Alexey N. Krutov
Samara State Aerospace University,Samara 443086,Russia Samara State University,Samara 443011,Russia
国际会议
北京
英文
1-9
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）