Advances in Manufacturing ›› 2019, Vol. 7 ›› Issue (2): 188-198.doi: 10.1007/s40436-019-00252-7

• ARTICLES • 上一篇    下一篇

Time-variant reliability analysis of a continuous system with strength deterioration based on subset simulation

Xi-Nong En1, Yi-Min Zhang2, Xian-Zhen Huang1   

  1. 1 School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, People's Republic of China;
    2 Equipment Reliability Institute, Shenyang University of Chemical Technology, Shenyang 110142, People's Republic of China
  • 收稿日期:2018-11-08 修回日期:2018-12-24 出版日期:2019-06-25 发布日期:2019-06-19
  • 通讯作者: Yi-Min Zhang, Xian-Zhen Huang E-mail:ymzhang@mail.neu.edu.cn;xzhhuang@mail.neu.edu.cn
  • 基金资助:
    The authors gratefully acknowledge the support of the National Natural Science Foundation of China (Grant Nos. U1708254 and 51575094).

Time-variant reliability analysis of a continuous system with strength deterioration based on subset simulation

Xi-Nong En1, Yi-Min Zhang2, Xian-Zhen Huang1   

  1. 1 School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, People's Republic of China;
    2 Equipment Reliability Institute, Shenyang University of Chemical Technology, Shenyang 110142, People's Republic of China
  • Received:2018-11-08 Revised:2018-12-24 Online:2019-06-25 Published:2019-06-19
  • Contact: Yi-Min Zhang, Xian-Zhen Huang E-mail:ymzhang@mail.neu.edu.cn;xzhhuang@mail.neu.edu.cn
  • Supported by:
    The authors gratefully acknowledge the support of the National Natural Science Foundation of China (Grant Nos. U1708254 and 51575094).

摘要: To conduct a reliability analysis for mechanical components, it is necessary to consider the combined influence of strength deterioration and dynamic loads. An efficient method based on subset simulation is proposed in this paper to analyze time-variant reliability by considering the strength deterioration of mechanical components in a continuous system. A gamma process is used to describe the deterioration of system strength. A model for timevariant reliability considering strength deterioration is constructed for a continuous system. A representative example and tubular cantilever structure are assessed to demonstrate the efficiency and accuracy of the proposed method. The reliability probability examples were analyzed using a first-order reliability method and benchmark results for the proposed method were derived using direct Monte Carlo simulation (MCS). The results of the proposed method and MCS are consistent, indicating that the proposed method is an effective reliability analysis method for evaluating small failure probabilities in a continuous system subjected to strength deterioration and dynamic loads.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-019-00252-7

关键词: Time-variant reliability, Strength deterioration, Subset simulation (SS), Continuous system

Abstract: To conduct a reliability analysis for mechanical components, it is necessary to consider the combined influence of strength deterioration and dynamic loads. An efficient method based on subset simulation is proposed in this paper to analyze time-variant reliability by considering the strength deterioration of mechanical components in a continuous system. A gamma process is used to describe the deterioration of system strength. A model for timevariant reliability considering strength deterioration is constructed for a continuous system. A representative example and tubular cantilever structure are assessed to demonstrate the efficiency and accuracy of the proposed method. The reliability probability examples were analyzed using a first-order reliability method and benchmark results for the proposed method were derived using direct Monte Carlo simulation (MCS). The results of the proposed method and MCS are consistent, indicating that the proposed method is an effective reliability analysis method for evaluating small failure probabilities in a continuous system subjected to strength deterioration and dynamic loads.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-019-00252-7

Key words: Time-variant reliability, Strength deterioration, Subset simulation (SS), Continuous system