Prediction of creep rupture in 2.25Cr–1Mo notched bars

被引：0
作者：
J. Jelwan
机构：
[1] The Holy Spirit University of Kaslik (USEK),Department of Mechanical Engineering
来源：
Journal of Applied Mechanics and Technical Physics | 2017年 / 58卷
关键词：
damage; creep; notched bars; experimental data;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This paper re-examines the creep life methodology based on the continuum damage mechanics (CDM) of the Kachanov and Rabotnov theory. Uniaxial creep and multiaxial creep rupture formulations are presented taking into account the primary creep effect. The scalar damage parameter is computed up to time-to-rupture as a function of time and stress. The methodology implemented is based on the uniaxial time-to-rupture obtained experimentally. The times-to-rupture for bars with different notches are calculated. It is demonstrated that the use of the damage parameter is vital to indicate the critical damage location where failure occurs. Results are compared to those obtained experimentally. It is shown that the primary creep inclusion has a significant effect on the damage distribution zone.
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页码：129 / 138
页数：9
相关论文
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