聚乙烯-甲基丙烯酸缝合模式对复合材料抗冲击性能影响  

Effect of EMAA stitching pattern on impact resistance of composites

作　　者：尹志豪 葛超坤 徐平[3] 铁瑛[1] 张臻臻[1] 鞠光 YIN Zhihao;GE Chaokun;XU Ping;TIE Ying;ZHANG Zhenzhen;JU Guang(School of Mechanical and Power Engineering,Zhengzhou University,Zhengzhou 450001,China;Jiangsu Special Equipment Safety Supervision and Inspection Institute Wuxi Branch,Wuxi 214174,China;School of Water Conservancy and Transportation,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州大学机械与动力工程学院,郑州450001 [2]江苏省特种设备安全监督检验研究院无锡分院,无锡214174 [3]郑州大学水利与交通学院,郑州450001

出　　处：《复合材料科学与工程》2024年第12期12-18,33,共8页Composites Science and Engineering

基　　金：国家自然科学基金(52175153)。

摘　　要：在航空航天领域,缝合复合材料因其卓越的抗冲击性能而得到广泛应用。不同缝合模式会对复合材料的抗冲击性能产生影响,并且在缝合过程中,缝线对复合材料的层内性能也会造成一定的影响。通过采用多尺度建模和试验相结合的方法,探究聚乙烯-甲基丙烯酸(EMAA)缝线缝合间距、缝合方向对复合材料的抗冲击性能和层内性能的影响,验证了缝合复合材料板多尺度模型的有效性。缝合导致复合材料层合板缝线周围面内性能下降,但面外方向抗冲击性能有所提高。不同缝合间距的比较显示,缝合间距越小,复合材料的抗冲击性能提升越高。对比45°和0°两种不同缝合方向的层合板性能发现,45°缝合方向相较于0°缝合方向,在面内和面外性能方面表现都更为出色。In aerospace,stitched composites are widely used due to their excellent impact resistance.Different stitch patterns affect the impact resistance of composites,and during the stitching process,the stitches also have an effect on the intra-laminar properties of composites.In this paper,a combination of multi-scale modeling and experimental methods is used in order to investigate the effects of EMAA stitch spacing and stitch direction on the impact resistance and intra-laminar properties of composites.The results show that the validity of the multiscale modeling of stitched composite panels is verified.Stitching led to a decrease in the in-face properties of the composite laminates around the stitches,but improved the impact resistance in the out-face direction.Comparison of different stitch spacings showed that the smaller the stitch spacing,the higher the improvement in the impact resistance of the composite.Comparison of the performance of the two different stitch orientations,45°and 0°,showed that the 45°stitch orientation was superior to the 0°stitch orientation in terms of both in-plane and out-of-plane performance.

关 键 词：聚乙烯-甲基丙烯酸(EMAA) 复合材料 缝合 机械性能 低速冲击 多尺度建模 

分 类 号：TB332[一般工业技术—材料科学与工程]