ELASTIC-PLASTIC FINITE ELEMENT ANALYSIS OF FATIGUE CRACK TIP PLASTICITY AND CORRELATION OF FATIGUE CRACK PROPAGATION RATES UNDER TENSION-COMPRESSION LOADING

摘要：

Elastic-plastic finite element analysis has been performed in order to obtain the fatigue crack tip parameters under tension-compression loading. The crack tip plastic zone size, reverse plastic zone size, crack tip opening displacement have been obtained. These results show that the compressive loading part of the fatigue load cycle has a significant effect on these crack tip parameters and therefore has a strong effect on fatigue crack growth rate under tensioncompression loading. The obtained parameters from finite element analysis have been used to correlate the experimental obtained fatigue crack propagation rate, and good agreement has been obtained.

作者: Song Xin Tang Hui Zhang Jiazhen

作者单位: School of Mechanical and Power Engineering, Harbin University of Science and Technology School of Materials，Harbin University of Science and Technology

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）