对于颗粒增强复合材料的研究,过去多注重于其复合后的弹性模量。本文以等大颗粒的最紧密堆积状态为对象,建立了接触点模型,推导出掺入异种颗粒后强度变化的规律,发现强度率F=R/R_(A-A)随掺入率P=A/B的变化与正态分布曲线有关,这样当已知混杂颗粒掺入率后,在复合前即可借助N(0,1)的分布函数预测其强度率, For the study of particle reinforced composites, in the past more emphasis on its composite elastic modulus. In this paper, the contact point model was established for the most closely packed state of the large particles, and the law of the intensity change after the incorporation of the heterogeneous particles was deduced. It was found that the strength ratio F = R / R_ (AA) The change of B is related to the normal distribution curve, so that the intensity ratio of N (0,1) can be predicted by the distribution function of N (0,1)