中文摘要：

基于 Chaboche 开发的非线性的连续统损坏模型(CDM ) ，为 TC4 合金的高周期疲劳的一个修改模型被建议。不对称的周期疲劳测试在房间温度在杆标本上被进行。然后，在 CDM 需要的材料参数被疲劳测试获得，并且标本的压力分发由 FE 方法是计算的。与线性损坏模型(LDM ) 相比，损坏结果和 CDM 的生活预言与测试显示出一个更好的协议并且他们比 LDM 更精确。由使用在这研究开发到飞机引擎片的生活预言的 CDM，根是整个片的最危险的区域，最短的生活是 58 211 个周期，这被结束。最后，艇长幸存分析的比例的危险模型被用于疲劳可靠性的分析。艇长模型考虑 covariates，它包括直径，重量，吝啬的压力和张力的力量。结果证明吝啬的压力是加速破裂过程的唯一的因素。

英文摘要：

Based on the nonlinear continuum damage model （CDM） developed by Chaboehe, a modified model for high cycle fatigue of TC4 alloy was proposed. Unsymmetrical cycle fatigue tests were conducted on rod specimens at room temperature. Then the material parameters needed in the CDM were obtained by the fatigue tests, and the stress distribution of the specimen was calculated by FE method. Compared with the linear damage model （LDM）, the dam- age results and the life prediction of the CDM show a better agreement with the test and they are more precise than the LDM. By applying the CDM developed in this study to the life prediction of aeroengine blades, it is concluded that the root is the most dangerous region of the whole blade and the shortest life is 58 211 cycles. Finally, the Cox propor- tional hazard model of survival analysis was applied to the analysis of the fatigue reliability. The Cox model takes the covariates into consideration, which include diameter, weight, mean stress and tensile strength. The result shows that the mean stress is the only factor that accelerates the fracture process.