纤维分布均匀性对T300/BMP316复合材料层压板力学性能的影响

Effect of fiber distribution uniformity on the mechanical properties of composite laminates

采用三点弯曲法和数字化冲击仪,研究了纤维分布均匀性对T300/BMP316复合材料弯曲和冲击性能的影响,用有限元方法分析了纤维分布不均匀复合材料弯曲变形时的应力分布,提出了用纤维分布效应系数R来评价纤维分布不匀复合材料的性能。结果表明,纤维分布不均使T300/BMP316复合材料的弯曲性能和冲击性能强烈地受到纤维分布方式和载荷方向的影响,纤维分布效应系数R反映了纤维分布与性能的关系。

The effect of fiber distribution on the flexural and impact properties of T300/BMP316 unidirectional composite laminates was studied through the bending test under three-point loading and using a digital impact test machine. The finite-element analysis was performed to investigate the stress distribution of the deformed model structure with nonuniform fiber distribution. An effect coefficient of fiber distribution R was put forward to characterize the mechanic properties of composite materials. The results show that the flexural and impact properties are greatly affected by the fiber distribution type and the loading direction, and the effect coefficient R can be used to justify the properties of the composite laminates with nonuniform fiber distribution.