| 压缩机螺栓联接结构的有限元模拟及疲劳寿命分析 |
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| 引用本文： | 周昌玉,夏翔鸣,翟羽.压缩机螺栓联接结构的有限元模拟及疲劳寿命分析[J].压缩机技术,2005(6):11-13. |
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| 作者姓名： | 周昌玉 夏翔鸣 翟羽 |
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| 作者单位： | 1. 南京工业大学机械与动力工程学院,江苏,南京,210009
2. 扬子石化公司芳烃厂,江苏,南京,210034 |
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| 摘 要： | 疲劳破坏是螺栓失效的主要形式之一。应用接触有限元方法,对螺栓联接结构进行了应力分析。通过螺栓材料的疲劳试验,获得了材料的应力应变寿命曲线;采用多轴应变下的局部应力应变方法进行疲劳寿命计算;并研究了螺栓预紧力对螺栓疲劳寿命的影响,提出了延长螺栓寿命的方法。
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| 关 键 词： | 螺栓 接触有限元 局部应力应变法 疲劳 寿命预测 预紧力 |
| 文章编号： | 1006-2971(2005)06-0011-03 |
| 收稿时间： | 2005-07-20 |
| 修稿时间： | 2005年7月20日 |
Finite Element Simulation and Fatigue Life Prediction for Compressor Bolt Connection Structure |
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| ZHOU Chang-yu,XIA Xiang-ming,ZHAI Yu.Finite Element Simulation and Fatigue Life Prediction for Compressor Bolt Connection Structure[J].Compressor Technology,2005(6):11-13. |
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| Authors: | ZHOU Chang-yu XIA Xiang-ming ZHAI Yu |
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| Affiliation: | 1. Institute of chenzical machinery, Nanjing University of Technology, Nanjing 210009, China ; 2. Yangzhi Petroleum Company, Nanjing 210034, China |
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| Abstract: | Fatigue is the main rupture mode of bolt.The contact finite element method is used in present paper to analyze stress of bolt connection structure.By fatigue test of bolt material,the stress-strain life curve is obtained.The fatigue life is calculated with local stress and strain method under multiaxial condition.Finally the influence of pretension force to bolt fatigue life is studied and the method that extends the bolt life is proposed. |
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| Keywords: | bolt contact finite element local stress and strain method fatigue life prediction pretension force |
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