• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2021, Vol. 57 ›› Issue (16): 173-184,197.doi: 10.3901/JME.2021.16.173

• 特邀专刊:先进设计制造技术前沿:重要装备的可靠性保障 • 上一篇    下一篇

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机械结构概率疲劳寿命预测研究进展

赵丙峰1,2, 廖鼎3, 朱顺鹏3, 谢里阳1,2   

  1. 1. 东北大学机械工程与自动化学院 沈阳 110819;
    2. 东北大学航空动力装备振动及控制教育部重点实验室 沈阳 110819;
    3. 电子科技大学机械与电气工程学院 成都 611731
  • 收稿日期:2020-08-20 修回日期:2021-04-25 出版日期:2021-08-20 发布日期:2021-11-16
  • 通讯作者: 朱顺鹏(通信作者),男,1983年出生,博士,教授,博士研究生导师。主要研究方向为结构完整性评定、失效物理可靠性分析、疲劳强度与可靠性设计、损伤容限与寿命预测。E-mail:zspeng2007@uestc.edu.cn
  • 作者简介:赵丙峰,男,1991年出生,博士,讲师。主要研究方向为机械结构强度分析、多轴疲劳寿命预测和系统可靠性评估。E-mail:15940488242@163.com
  • 基金资助:
    国家自然科学基金(52005087,U1708255,N2103009)和中央高校基本科研业务专项资金资助项目。

Probabilistic Fatigue Life Prediction of Mechanical Structures: State of the Art

ZHAO Bingfeng1,2, LIAO Ding3, ZHU Shunpeng3, XIE Liyang1,2   

  1. 1. School of Mechanical Engineering and Automation, Northeastern University, Shenyang, Shenyang 110819;
    2. Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University, Shenyang 110819;
    3. School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu 611731
  • Received:2020-08-20 Revised:2021-04-25 Online:2021-08-20 Published:2021-11-16

摘要: 随着现代机械设计理论不断完善及对产品安全运行需求的提升,对结构的可靠性指标也提出了更高的要求,推动了概率疲劳寿命分析方法的发展。在机械结构的概率疲劳寿命评估过程中,充分考虑各类不确定性因素,进行结构疲劳进程驱动参数与概率疲劳寿命分布统计分析,是概率统计学和复杂结构计算力学交叉领域的热点问题。旨在系统阐释概率疲劳寿命评估发展史及基本分析流程,剖析相关概率分析理论、方法、模型及发展现状与瓶颈,主要内容涵盖概率疲劳问题的不确定性来源、疲劳进程驱动参数表征及寿命评估模型构建与应用三方面内容。总结、梳理该领域的最新研究成果并对概率疲劳寿命评估的未来发展趋势及关键问题作出展望。

关键词: 机械结构, 疲劳寿命评估, 概率建模, 可靠性, P-S-N曲线

Abstract: With the continuous improvement of modern mechanical design theory and demand for safe operation of products, higher requirements are put forward for the structural reliability index, which promotes the development of probabilistic fatigue life analysis method. In the process of probabilistic fatigue life assessment of mechanical structures, the statistical analysis of structural fatigue process driving parameters and probabilistic fatigue life distribution, with various uncertain factors fully considered, is a hot issue in the cross-field of probabilistic statistics and computational mechanics for complex structures. The purpose of the study is to systematically explain the development history and basic analysis process of probabilistic fatigue life assessment, and analyze the relevant probability analysis theory, method, model, development status and bottleneck. Three main contents, the uncertainty sources of probabilistic fatigue problems, the characterization of fatigue process-driven parameters and the construction and application of life assessment model, are presented. Finally, while the latest research results in this field are summarized and sorted out, the future development trend and key issues of probabilistic fatigue life assessment are prospected.

Key words: mechanical structure, fatigue life assessment, probabilistic modeling, reliability, P-S-N curve

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