The effective stiffness are compared with the ones by nozaki for n = 4 . numerical results show that the nature of the imperfect interface has significant effect on stiffness of a convex polygon - shaped fibers composites 并以正四边形纤维横截面作为算例,将所得有效模量与nozaki结果比较,数值结果表明界面的非完美性质对凸多边形纤维增强复合材料的有效性能有明显影响。