摘要
对复合材料强度的统计特性进行了讨论，对Ｗｅｉｂｕｌｌ分布参数α和β的置信下限作了研究，给出了分布参数α和β未知、α未知而β已知以及α和β均已知等情况下，从样本中求取复合材料强度许用值的方法，并和文献［１］的计算结果作了比较，论证了从样本中求取许用值时假定α已知是偏不安全的。本文还就设计许用值对样本容量的敏感度进行了分析。
The statistical properties of the strength of composite materials are discussed.The lower confidencelimits for the Weibull paramerters αand βare analyzed.Computational methods for calculating the design allow-ables from a Weibull sample either with known parameters or with unknown parameters are presented.The com-putational results from the present methods are compared with those in reference[1] . That the Weibull parame-ters a can not be assumed to be known when design allowables are calculated from a sample is proved.The sensi-tivity of design allowables to the sample size is also studied.
出处
《机械强度》
CAS
CSCD
北大核心
1994年第4期45-47,26,共4页
Journal of Mechanical Strength
