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独立多细节结构耐久性试验寿命的统计标定

贺小帆 董彦民 刘彦毛 刘文珽

贺小帆, 董彦民, 刘彦毛, 等 . 独立多细节结构耐久性试验寿命的统计标定[J]. 北京航空航天大学学报, 2012, 38(6): 715-719.
引用本文: 贺小帆, 董彦民, 刘彦毛, 等 . 独立多细节结构耐久性试验寿命的统计标定[J]. 北京航空航天大学学报, 2012, 38(6): 715-719.
He Xiaofan, Dong Yanmin, Liu Yanmao, et al. Statistical scaling of durability life for independent multi-detail structures[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, 38(6): 715-719. (in Chinese)
Citation: He Xiaofan, Dong Yanmin, Liu Yanmao, et al. Statistical scaling of durability life for independent multi-detail structures[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, 38(6): 715-719. (in Chinese)

独立多细节结构耐久性试验寿命的统计标定

基金项目: 国家自然科学基金资助项目(11002009)
详细信息
  • 中图分类号: V215.5

Statistical scaling of durability life for independent multi-detail structures

  • 摘要: 在进行疲劳试验评定结构寿命时,为了能真实模拟实际结构形式和传载情况,模拟试件往往设计成多细节试件,进行不完全疲劳寿命试验,必须由多细节试件寿命推断单细节寿命.针对工程上常用的两种寿命分布形式:对数正态分布和双参数Weibull分布,以结构串联失效模型为基础,建立了由相同独立多细节结构疲劳寿命分布确定单细节寿命分布的统计标定方法.当多细节试件寿命服从对数正态分布时,可近似认为单细节寿命也服从对数正态分布,单细节寿命分布参数与多细节试件寿命分布参数间存在确定关系,并且单细节寿命数学期望和标准差均高于多细节试件相应参数;当多细节寿命服从双参数Weibull分布时,单细节寿命也服从双参数Weibull分布,其斜率不变,但位置参数按比例放大.最后给出了一个分析实例.

     

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出版历程
  • 收稿日期:  2011-03-15
  • 网络出版日期:  2012-06-30

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