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| 波纹管疲劳寿命可靠性分析 | |
| 引用本文： | 曹文晖,於孝春. 波纹管疲劳寿命可靠性分析[J]. 化工自动化及仪表, 2010, 37(7): 56-58 |
| 作者姓名： | 曹文晖 於孝春 |
| 作者单位： | 南京工业大学机械与动力工程学院,南京,210009;南京工业大学机械与动力工程学院,南京,210009 |
| 摘 要： | 波纹管是典型的低周疲劳部件,用局部应力应变法预测其疲劳萌生寿命可行且精确,考虑到影响疲劳寿命的诸多因素的随机性,将应变寿命曲线表示为概率曲线,并考虑累积损伤的随机性,通过建立近似拟合多项式方法求得各设计寿命下的波纹管的可靠度曲线,该方法是简单有效的波纹管疲劳寿命可靠度计算方法。 |
| 关 键 词： | 波纹管 局部应力应变法 疲劳寿命 可靠性 |
Study on the Reliability of Fatigue Life of Bellows |
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| CAO Wen-hui,YU Xiao-chun. Study on the Reliability of Fatigue Life of Bellows[J]. Control and Instruments In Chemical Industry, 2010, 37(7): 56-58 | |
| Authors: | CAO Wen-hui YU Xiao-chun |
| Affiliation: | (College of Mechanical and Power Engineering,Nanjing University of Technology,Nanjing 210009,China) |
| Abstract: | Bellows is a typical component enduring low cycle fatigue,so it is feasible and accurate to calculate the crack initiation life of bellows with the method of local stress and strain.By considering the uncertainties of bellow＇s fatigue life,the probabilistic curve of cyclic strain-life relation was proposed,and the random fatigue damage accumulation was also considered.The fatigue life under certain reliability and the component reliability curve were gained with the method of fitting polynomial,it is a simple and efficient method of calculating reliability of bellow＇s fatigue life. |
| Keywords: | bellows local stress and strain method fatigue life reliability |
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