钢制薄壁球形容器静强度的模糊可靠度

Spherical Vessel Fuzzy Reliability at Pressure Test

在信息不完整或缺乏足够数据的情况下,给出可靠度的界限或范围,比给出一确定单值具有更高的可信度。文中提出概率模型的分布参数为区间界限限定时,结构模糊可靠度的计算方法。在最苛刻的气压与液压试验条件下,对球形容器初始静强度的可靠度范围进行定量分析。

In reliability computation, when available information is incomplete or insufficient accurate data are available, a range representation of reliability may be more confident than represented by a single number. A procedure was presented for computing the fuzzy reliability of mechanical structures, when parameters of probability distribution are a range. By using this method, it is quantitative analyzed that reliability range of virgin static strength of spherical vessel at pressure test of all severe condition.