基于盲数理论的机械结构复杂时变可靠性计算方法  

Computing-algorithm for Time-dependent Reliability of Mechanical Structure Based on Blind Number

作　　者：郭朋彦[1] 石博强[1] 肖成勇[1] 闫永业[1] 李海鹏 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]中集车辆集团研发中心,深圳518067

出　　处：《农业机械学报》2010年第9期210-213,198,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(50475173);北京市自然科学基金资助项目(3093022)

摘　　要：运用盲数理论及不确定变量盲数化的基本思想求解了机械结构复杂时变可靠性问题。推导了机械结构基于随机过程的时变特性,使用盲数表达了时变过程中的不确定量,建立了基于盲数理论的机械结构时变可靠度计算模型,在LabVIEW平台下编写了相应的计算程序,并用该程序计算了某机械结构的时变可靠度。结果表明:盲数为这种复杂可靠度模型的求解提供了一种简单而高效的计算方法。With the blind number theory,the mechanical structure＇s time-dependent characteristic based on stochastic process was deduced.The uncertain variables in time-dependent stochastic process of mechanical structure were expressed in blind number,and its time-dependent reliability calculation model based on blind number theory was built.And what＇s more,the corresponding program in LabVIEW language was given,and a free beam＇s time-dependent reliability was also computed.The result showed that blind number as a kind of numerical tool is very convenient and effective for solving the complicated reliability calculation model.

关 键 词：机械结构 可靠性 盲数 随机过程 时变 

分 类 号：TB114.3[理学—概率论与数理统计] TH122[理学—数学]