| 一种结构可靠性的数值计算方法 |
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| 引用本文： | 蒋向华,杨晓光,王延荣.一种结构可靠性的数值计算方法[J].航空动力学报,2005,20(5):778-782. |
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| 作者姓名： | 蒋向华 杨晓光 王延荣 |
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| 作者单位： | 北京航空航天大学能源与动力工程学院,北京100083 |
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| 摘 要： | 应力—强度干涉法是结构可靠度计算的基础,然而在结构疲劳可靠度计算时材料的等寿命强度很难求得。根据模糊概率积分法,给出了一种利用蒙特卡洛抽样直接求解结构可靠度的数值计算方法,经过数值试验表明,该算法简单、有效,而且实施过程简单,容易为工程计算所采用,具有一定的应用价值。
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| 关 键 词： | 航空、航天推进系统 结构可靠性 蒙特卡洛模拟 应力—强度干涉 模糊概率积分法 |
| 文章编号： | 1000-8055(2005)05-0778-05 |
| 收稿时间： | 2004/5/13 0:00:00 |
| 修稿时间： | 2004年5月13日 |
Numerical Approach for Structure Reliability Evaluation |
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| JIANG Xiang-hu,YANG Xiao-guang and WANG Yan-rong.Numerical Approach for Structure Reliability Evaluation[J].Journal of Aerospace Power,2005,20(5):778-782. |
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| Authors: | JIANG Xiang-hu YANG Xiao-guang and WANG Yan-rong |
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| Institution: | School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing100083,China |
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| Abstract: | Stress-strength Integral method is the basis for structure reliability evaluation,but this method can not work properly when it is used to structure fatigue reliability estimation as the important parameter-material's equi-life strength-can hardly be obtained.A numerical approach based on the fuzzy probability integral method was studied.This method can give the structure reliability directly without the need of the equilife strength.A case study indicates that this approach is effective,and it is easy to implement and suitable for engineering applications. |
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| Keywords: | aerospace propulsion system structure reliability Monte-Carlo simulation stress strength interference fuzzy probability integral |
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