| 轧机零件寿命估算的新方法 |
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| 引用本文： | 张洪亭,王德俊,曹大本,张昕.轧机零件寿命估算的新方法[J].东北大学学报(自然科学版),1990(4). |
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| 作者姓名： | 张洪亭 王德俊 曹大本 张昕 |
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| 作者单位： | 东北工学院机械二系
(张洪亭，王德俊，曹大本)，东北工学院机械二系(张昕) |
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| 摘 要： | 本文根据中板轧机机架的故障状况,实测了外载荷,编制了载荷谱,用有限元法将压力谱换算为应力谱;根据机架材料的疲劳性能曲线及应力谱,估算了机架的疲劳寿命。还提出了谱的加权平均、复杂应力的当量换算及用随机疲劳理论估算零件寿命的方法。
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| 关 键 词： | 随机疲劳 疲劳寿命 寿命估算 载荷谱 应力谱 轧机零件 |
New Method of Service Life Estimation for Rolling Mill Parts |
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| Zhang Hongting,Wang Dejun,Cao Daben,Zhang Xin.New Method of Service Life Estimation for Rolling Mill Parts[J].Journal of Northeastern University(Natural Science),1990(4). |
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| Authors: | Zhang Hongting Wang Dejun Cao Daben Zhang Xin |
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| Abstract: | Based on the findings to the housing failures of a medium-plate mill, its external loads were measured with its load spectrum worked out. Then, the pressure spectrum is converted into the stress spectrum by the finite element method. The fatigue life of the mill housing is thus estimated based on the fatigue characteristic of the housing material used and the stress spectrum. In addition, such methods as weighted average of spectrum, conversion of equivalents and parts'life estimation using random fatigue theory are described. |
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| Keywords: | random fatigue fatigue life life estimation load spectrum stress spectrum rolling mill part |
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