考虑相关性的同级叶片系统强度可靠度分析方法

Analysis method for same-stage-blade system strength reliability concerning the correlation

School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, China

摘要: 提出了考虑相关性的同级叶片系统强度可靠度分析方法.该方法包括同级叶片强度随机变量相关系数的数值模拟方法、同级叶片强度临界状态函数之间相关系数的确定方法.并给出考虑材料相关性的同级叶片系统可靠度计算二阶窄界限公式.讨论了考虑失效相关的同级叶片系统强度可靠度不同计算方法.最后通过算例表明所提出方法的有效性.
- 航空、航天推进系统 /
- 相关系数 /
- 系统可靠度 /
- 叶片 /
- 数值仿真
Abstract: An analytical method for the strength reliability of the same-stage-blade system was proposed.The method covers numerical simulation and determination of the correlation coefficients of the same-stage-blade material strength and the strength limit state function.Moreover,the narrow limit formula for the same-stage-blade system strength reliability was presented.Then,the reliability calculation methods of the same-stage-blade system strength were discussed by taking into account failure-related factors.Finally,a numerical example of same-stageblade system was given to demonstrate the efficiency of the method.
- aerospace propulsion system /
- correlation coefficient /
- system reliability /
- blades /
- simulation

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