J4 ›› 2012, Vol. 39 ›› Issue (6): 170-175.doi: 10.3969/j.issn.1001-2400.2012.06.028

• 研究论文 • 上一篇    下一篇

结构动态非概率可靠性预测模型

方永锋;陈建军;阎彬;马洪波   

  1. (西安电子科技大学 电子装备结构设计教育部重点实验室,陕西 西安  710071)
  • 收稿日期:2012-05-03 出版日期:2012-12-20 发布日期:2013-01-17
  • 通讯作者: 方永锋
  • 作者简介:方永锋(1975-),男,西安电子科技大学博士研究生,E-mail: fangyf_9707@126.com.
  • 基金资助:

    国家自然科学基金资助项目(50905134);中央高校基本科研资金资助项目(JY10000904012)

Model for prediction of structural dynamic non-probabilistic reliability

FANG Yongfeng;CHEN Jianjun;YAN Bin;MA Hongbo   

  1. (Ministry of Education Key Lab. of Electronic Equipment Structure,  Xidian Univ., Xi'an  710071, China)
  • Received:2012-05-03 Online:2012-12-20 Published:2013-01-17
  • Contact: FANG Yongfeng

摘要:

研究了当载荷区间变量随时间变化且结构强度区间变量随时间退化情况下的结构动态非概率可靠性问题,给出了结构强度退化的变化区间及其均值、离差的计算表达式;根据应力-强度干涉理论和区间理论,建立了在结构强度随时间退化时,结构所承受的载荷分别为阶梯型、等幅交变型和任意时变型3种情况下的结构动态非概率可靠性预测模型,并通过3个算例说明文中所建模型的合理性.

关键词: 结构, 动态, 区间, 非概率可靠性

Abstract:

The structural dynamic non-probabilistic reliability under the interval variable of loads changing over time and the interval variable of structural strength degrading over time is studied. The formulas for the change interval of structural strength degradation and its mean value and deviation are shown. According to the stress-strength interference theory and the interval theory, the structural dynamic reliability prediction model are established under the structural strength degradation over time while the loads of the structure bearing are classified three cases loads: ladder type, constant amplitude alternating type and random changing over time type. Finally, three examples are used to illustrate that the structural dynamic reliability models are reasonable and feasible.

Key words: structural, dynamic, interval, non-probabilistic reliability

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