Fatigue Crack Growth Rate of 16mnr Steel with Effect of Stress Ratio

摘要：

Fatigue crack growth was simulated by using a newly developed unified model on the fatigue initiation and crack growth based on an incremental multiaxial fatigue criterion. The cyclic elastic-plastic stress-strain field was analyzed using the general-purpose finite element software (ABAQUS) with the implementation of a robust cyclic plasticity theory. The fatigue crack growth rates with respect to three different stress ratios were selected as the benchmark to check the unified model. The predicted results agreed with the experimental data very well. The insensitivity of the crack growth rate to the stress ratio is due to the fast mean stress relaxation.

关键词： Stress ratio Fatigue crack growth rate Unified model 16MnR steel

作者: Donghui Yin Xiaogui Wang Baoxiang Qiu Zengliang Gao

作者单位: College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310032, China

会议类型: 国际会议

会议名称: The 2nd International Conference on Advances in Product Development and Reliability(第二届产品开发与可靠性进展国际会议 PDR2010)

会议地点: 沈阳

会议语种:英文

页码: 278-282

在线出版日期: 2010-07-28（万方平台首次上网日期，不代表论文的发表时间）