时变可靠性分析的高效近似最大可能轨迹法
V214.11%TB114; 现有的时变可靠性分析方法在处理飞行器复杂时变可靠性分析问题时,具有求解效率过低的缺点.在基于近似最大可能轨迹的时变可靠性分析方法的基础上,根据时间离散所得串联系统瞬时可靠度最小的组件决定整个系统可靠度的特点,在最大可能轨迹自适应建模过程中同时考虑轨迹模型的预测误差和预估值增加样本,提出时变可靠性分析的高效近似最大可能轨迹法;采用解析算例验证最大可能轨迹法的有效性,并将该可靠性分析方法应用于水动力涡轮叶片和航天飞机机翼的时变可靠性分析.结果表明:在精度相近的情况下,所提方法对极限状态函数调用次数不高于基于时间离散的可靠性分析方法的3%....
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| Published in | 航空工程进展 Vol. 15; no. 1; pp. 51 - 60 |
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| Main Authors | , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
西北工业大学 航天学院, 西安 710072%北京宇航系统工程研究所, 北京 100076%中国运载火箭技术研究院, 北京 100076
01.02.2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-8190 |
| DOI | 10.16615/j.cnki.1674-8190.2024.01.06 |
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| Abstract | V214.11%TB114; 现有的时变可靠性分析方法在处理飞行器复杂时变可靠性分析问题时,具有求解效率过低的缺点.在基于近似最大可能轨迹的时变可靠性分析方法的基础上,根据时间离散所得串联系统瞬时可靠度最小的组件决定整个系统可靠度的特点,在最大可能轨迹自适应建模过程中同时考虑轨迹模型的预测误差和预估值增加样本,提出时变可靠性分析的高效近似最大可能轨迹法;采用解析算例验证最大可能轨迹法的有效性,并将该可靠性分析方法应用于水动力涡轮叶片和航天飞机机翼的时变可靠性分析.结果表明:在精度相近的情况下,所提方法对极限状态函数调用次数不高于基于时间离散的可靠性分析方法的3%. |
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| AbstractList | V214.11%TB114; 现有的时变可靠性分析方法在处理飞行器复杂时变可靠性分析问题时,具有求解效率过低的缺点.在基于近似最大可能轨迹的时变可靠性分析方法的基础上,根据时间离散所得串联系统瞬时可靠度最小的组件决定整个系统可靠度的特点,在最大可能轨迹自适应建模过程中同时考虑轨迹模型的预测误差和预估值增加样本,提出时变可靠性分析的高效近似最大可能轨迹法;采用解析算例验证最大可能轨迹法的有效性,并将该可靠性分析方法应用于水动力涡轮叶片和航天飞机机翼的时变可靠性分析.结果表明:在精度相近的情况下,所提方法对极限状态函数调用次数不高于基于时间离散的可靠性分析方法的3%. |
| Abstract_FL | When solving complex time-variant reliability analysis(TRA)problems,the traditional TRA methods have the problem of low solving efficiency.Based on the approximating most-probable-points trajectory(AMPPT)method,the efficient approximating the most-probable-point trajectory(EAMPPT)method for TRA is proposed.According to the characteristics that the reliability of weakest part of the system determines the reliabili-ty of the system,EAMPPT takes full account of prediction values and their errors in the process of approximating the most-probable-point trajectory.The mathematical example is used to verify the effectiveness of the adaptive sampling method.EAMPPT is applied to solve TRA problems involving hydrokinetic turbine blades and the wing of the reusable aerospace during reenter.The results show that the calculation accuracy of the proposed EAMPPT and time-discretization based TRA method is similar,but the number of performance function evaluations of EAMPPT is less than 3%of traditional TDTRA. |
| Author | 张云伟 杜思怡 邹南征 马梦颖 李春娜 龚春林 |
| AuthorAffiliation | 西北工业大学 航天学院, 西安 710072%北京宇航系统工程研究所, 北京 100076%中国运载火箭技术研究院, 北京 100076 |
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| Author_FL | MA Mengying DU Siyi ZOU Nanzheng ZHANG Yunwei GONG Chunlin LI Chunna |
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| Author_xml | – sequence: 1 fullname: 邹南征 – sequence: 2 fullname: 龚春林 – sequence: 3 fullname: 张云伟 – sequence: 4 fullname: 马梦颖 – sequence: 5 fullname: 杜思怡 – sequence: 6 fullname: 李春娜 |
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| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| Keywords | 最大可能轨迹 adaptive sampling time discretization 自适应采样 most-probable-point trajectory Kriging model Kriging模型 时间离散 time-variant reliability 时变可靠性 |
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| Snippet | V214.11%TB114; 现有的时变可靠性分析方法在处理飞行器复杂时变可靠性分析问题时,具有求解效率过低的缺点.在基于近似最大可能轨迹的时变可靠性分析方法的基础上,根据时间... |
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| Title | 时变可靠性分析的高效近似最大可能轨迹法 |
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