摘要
提出了一种分析缝纫复合材料层合板面内力学性能的模型即纤维弯曲模型 (FBM)。认为在缝纫孔周围纤维的弯曲变形是影响缝纫复合材料层合板面内力学性能的主要原因。从分析缝孔单胞的纤维弯曲几何特征入手 ,最终得到层合板面内的弹性应力应变关系。以缝纫复合材料层合板 [0 4 5 0 -45 90 4 5 0 - 45 ]2S为例 ,计算了缝纫复合材料层合板面内拉伸强度。计算结果表明 ,理论预测与实验结果吻合良好 ,证实了该模型的正确性。
An analytical model named fibres bend model (FBM) is presented for the in plane mechanical properties of stitched composite laminates. It is supposed that the primary reason of the effect of the in plane mechanical properties of stitched composite laminates is the misalignment of the fibres as they are forced to spread around the stitches. The geometrical characteristics of the fibres in the stitch unit cells are considered. The elastic relation of stress and strain of the stitched laminates is obtained finally. The in plane tensile strength is calculated in the example of the stitched composite laminates [0/45/0/-45/90/45/0/-45] 2S . The results show that the theoretical predicted values accord well with the experiments. The model is proved to be feasible.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2002年第12期35-38,共4页
Journal of Chongqing University
基金
国家自然科学基金资助项目 (3 9970 198)
