| 转轴裂纹扩展的可靠性灵敏度分析 |
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| 引用本文： | 苏长青,张义民,马辉.转轴裂纹扩展的可靠性灵敏度分析[J].航空动力学报,2009,24(4):810-814. |
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| 作者姓名： | 苏长青 张义民 马辉 |
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| 作者单位： | 东北大学,机械工程与自动化学院,沈阳,110004 |
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| 基金项目： | 国家高科技研究发展计划(2007AA04Z442);;国家自然科学基金(50805019) |
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| 摘 要： | 在Paris-Erdogan裂纹扩展模型的基础上,考虑裂纹扩展模型的随机参数影响,采用裂纹长度失效准则建立了旋转机械转轴裂纹扩展的可靠性模型,应用随机摄动理论和Kronecker代数导出了状态函数的前四阶矩,应用应力-强度干涉理论和四阶矩技术确定了转轴裂纹扩展的可靠度,利用矩阵微分理论和灵敏度技术系统地研究了转轴裂纹扩展的可靠性灵敏度问题.
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| 关 键 词： | 转轴 裂纹扩展 随机摄动 可靠性灵敏度 |
| 收稿时间： | 3/17/2008 5:22:35 PM |
| 修稿时间： | 2008/8/19 0:00:00 |
Reliability sensitivity analysis for crack propagation of rotating shaft |
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| SU Chang-qing,ZHANG Yi-min and MA Hui.Reliability sensitivity analysis for crack propagation of rotating shaft[J].Journal of Aerospace Power,2009,24(4):810-814. |
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| Authors: | SU Chang-qing ZHANG Yi-min and MA Hui |
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| Institution: | School of Mechanical Engineering and Automation;Northeastern University;Shenyang 110004;China |
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| Abstract: | Based on the Paris-Erdogan crack propagation model,the effect of random parameters on the crack propagation model was considered.The reliability model for crack propagation of rotating shaft in rotating machinery was presented by the crack length failure criteria.The first four moments of state function were derived from the random perturbation theory and the Kronecker algebra.The reliability of crack propagation was determined by using the stress-strength interference theory and the fourth moment method.Th... |
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| Keywords: | rotating shaft crack propagation random perturbation reliability sensitivity |
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