Discussion on: A non-probabilistic concept of reliability
Discussion on: A non-probabilistic concept of reliability
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DOI：
10.1016/0167-4730(95)00010-2
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发表时间：
1995-10
影响因子：
5.8
通讯作者：
Y. Ben-Haim;I. Elishakoff
中科院分区：
文献类型：
--
作者：
Y. Ben-Haim;I. Elishakoff
在最近有趣的文章[1]中，本-哈伊姆提出了一个非概率的可靠性概念。让我们回顾一下可靠性的经典定义[2]：“可靠性：部件、设备或系统在特定情况下在特定时间段内满意地执行其预期功能的概率，例如环境条件、操作时间的限制以及维护的频率和彻底程度”。文章[1]没有给出(非概率)可靠性的另一种定义。然而，可以从公式(60)中推导出一个可能的定义，即r=1-Am~，×/Tt(r~)(1)其中r代表非概率可靠性，“~是整个壳体可能经历的最大径向偏差(缺陷)，g(Fi)是允许径向公差为~的壳体的最小屈曲载荷。通过下列问题[1]引入数量A……。”当壳体承受静轴向载荷时，径向公差有多大是可以接受的？“。此外，径向公差的选择方式是使轴向载荷不超过最小屈曲载荷。
In the recent interesting article [1] Ben-Haim proposes a non-probabilistic concept of reliability. Let us recall the classical definition of reliability [2]:" Reliability: the probability that a component part, equipment, or system will satisfactorily perform its intended function under given circumstances, such as em'ironmental conditions, limitations as to operating time, and frequency and thoroughness of maintenance, for a specified period of time". The article [1] does not give an alternative definition of the (non-probabilistic) reliability. However, a possible definition can be inferred from Eq.(60), which reads r= 1-am~,×/tt (r~)(1) where r stands for non-probabilistic reliability,"~ is the maximum radial deviation (imperfection) the ensemble of shells may experience, g (fi) is the minimum buckling load for shells whose allowable radial tolerance is~. The quantity A..... is introduced through the following question [1]." How large a radial tolerance is acceptable, when the shell will bear static axial loads up to the value A,,~,~?". Moreover, the radial tolerance is chosen in such a manner so that the axial load does not exceed the least buckling load