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两阶段变阈值关联竞争退化建模

王乾元 袁宏杰 徐如远

王乾元, 袁宏杰, 徐如远等 . 两阶段变阈值关联竞争退化建模[J]. 北京航空航天大学学报, 2020, 46(2): 398-406. doi: 10.13700/j.bh.1001-5965.2019.0215
引用本文: 王乾元, 袁宏杰, 徐如远等 . 两阶段变阈值关联竞争退化建模[J]. 北京航空航天大学学报, 2020, 46(2): 398-406. doi: 10.13700/j.bh.1001-5965.2019.0215
WANG Qianyuan, YUAN Hongjie, XU Ruyuanet al. Two-stage variable threshold correlative and competitive degradation modeling[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(2): 398-406. doi: 10.13700/j.bh.1001-5965.2019.0215(in Chinese)
Citation: WANG Qianyuan, YUAN Hongjie, XU Ruyuanet al. Two-stage variable threshold correlative and competitive degradation modeling[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(2): 398-406. doi: 10.13700/j.bh.1001-5965.2019.0215(in Chinese)

两阶段变阈值关联竞争退化建模

doi: 10.13700/j.bh.1001-5965.2019.0215
详细信息
    作者简介:

    王乾元  男, 硕士研究生。主要研究方向:可靠性与退化试验

    袁宏杰  男, 博士, 副教授, 硕士生导师。主要研究方向:可靠性评估与验证、环境试验等

    徐如远  男, 硕士研究生。主要研究方向:软硬件可靠性联合测试

    通讯作者:

    袁宏杰, E-mail: 05938@buaa.edu.cn

  • 中图分类号: TB114.3

Two-stage variable threshold correlative and competitive degradation modeling

More Information
  • 摘要:

    机电产品在使用过程中,存在磨损退化失效和环境引起的冲击失效。通常认为自身退化与冲击失效是相互独立的或存在冲击造成自身退化突增的局部关联现象。本文考虑冲击会影响退化过程,同时退化也会影响冲击,当自身退化量达到一定值后不仅会影响冲击失效的失效率,还会使产品冲击失效阈值降低,造成产品的抗冲击能力下降,使产品的冲击失效过程呈现两阶段现象,在自身退化与冲击失效相互关联相互竞争的情况下,建立了失效率与失效阈值改变的可靠性模型,解决了传统竞争退化建模考虑因素不完整的问题。

     

  • 图 1  自身退化失效示意图

    Figure 1.  Schematic diagram of self-degradation failure

    图 2  冲击失效示意图

    Figure 2.  Schematic diagram of shock failure

    图 3  产品失效机理关系

    Figure 3.  Relationship in product failure mechanism

    图 4  局部竞争失效示意图

    Figure 4.  Schematic diagram of local competition failure

    图 5  相互关联竞争失效关系

    Figure 5.  Relationship in correlative competition failure

    图 6  微型发动机各部件可靠性串联系统

    Figure 6.  Micro-engine part reliability series system

    图 7  独立竞争失效模型可靠性与时间关系

    Figure 7.  Relationship between reliability and time of independent competition failure model

    图 8  退化影响冲击失效率竞争与独立竞争可靠性对比

    Figure 8.  Comparison of reliability between competition with degradation impacting shock failure rate and independent competition

    图 9  变阈值相互关联竞争模型可靠性与时间关系

    Figure 9.  Relationship between reliability and time of variable threshold correlative and competitive model

    图 10  不同情形下可靠性与时间关系对比

    Figure 10.  Relationship between reliability and time in different situations

    表  1  某型电机可靠性分析参数

    Table  1.   Reliability analysis parameters for a certain type of motor

    参数 数值
    D/μm3 0.5
    D1/GPa 1.55
    D2/GPa 1.4
    μZ 1×10-4
    σZ 2×10-5
    μw 1.2
    σw 0.2
    H/μm3 7×10-4
    λ/转 5×10-5
    μβ 2.59×10-5
    σβ 2.29×10-5
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出版历程
  • 收稿日期:  2019-05-10
  • 录用日期:  2019-07-05
  • 刊出日期:  2020-02-20

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