为研究碳纤维缠绕复合材料的力学性能,采用先缠绕成型,再展开铺平,最后固化成型的方法制作了铺层的纤维缠绕复合材料剪切试件,并结合NOL环试件进行了缠绕复合材料的拉伸、层间剪切和面内剪切试验,获得了缠绕复合材料的基本力学性能参数,并采用最大似然估计对其进行了分析。结果表明,纤维缠绕复合材料面内剪切强度、拉伸强度和层间剪切强度均服从双参数威布尔分布;纤维缠绕复合材料剪切应力-应变曲线呈现出典型的非线性特征,纤维交叠结构对缠绕结构内部的损伤扩展起到了阻碍作用,导致其面内剪切失效应变明显大于复合材料层合板的面内剪切失效应变。

To study the mechanical properties of carbon filament wound composites, the tensile,in-plane shearand interface shear tests of filament wound compositeswere carried out by using NOL specimens and shear specimens of filament wound composites which was made by the method of first winding and forming, then unfolding and flattening, and finally curing and forming,the basic mechanical properties parameters of the wound composites were obtained, and the maximum likelihood estimation was used to analyze them. The results show that the in-plane shear strength, tensile strength and interlaminar shear strength of filament wound composites all obey the two-parameter Weibull distribution. The shear stress-strain curve of filament-wound composites presents typical nonlinear characteristics, and the fiber overlap structure hinders the damage expansion inside the structure, resulting in the in-plane shear failure strain being significantly greater than the in-plane shear failure strain of the composite laminate shear failure strain.