碳-玻璃纤维夹层泡沫缝合复合材料的弯曲性能  

Bending properties of carbon-glass fiber sandwich foam stitching composites

作　　者：毛丽贺[1,2] 朱佳琦 陈利[1,2] 焦亚男[1,2] 鲁吉文 孙荣庆 MAO Lihe;ZHU Jiaqi;CHEN Li;JIAO Yanan;LU Jiwen;SUN Rongqing(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;Key Laboratory of Advanced Textile Composites of Ministry of Education,Tiangong University,Tianjin 300387,China;Aerospace Research Institute of Materials&Processing Technology,Beijing 100076,China)

机构地区：[1]天津工业大学纺织科学与工程学院,天津300387 [2]天津工业大学先进纺织复合材料教育部重点实验室,天津300387 [3]航天材料与加工技术研究院,北京100076

出　　处：《天津工业大学学报》2025年第2期8-14,22,共8页Journal of Tiangong University

基　　金：天津市多元重点项目(22JCZDJC00940)。

摘　　要：针对夹层泡沫复合材料在弯曲载荷下易分层失效的问题,通过缝合技术来增强其弯曲性能。通过实验方法研究缝合密度和面板厚度对复合材料弯曲性能的影响,并结合有限元模拟分析弯曲过程渐进损伤。结果表明:碳-玻璃纤维夹层泡沫缝合复合材料的弯曲性能与缝合密度和面板厚度呈正比关系。当缝合密度为10 mm×10 mm、面板厚度为5层时,试样弯曲性能最优,弯曲强度达到73 MPa,弯曲模量为4.19 GPa,弯曲刚度为4.01×10^(6)N·mm^(2);碳-玻璃纤维夹层泡沫缝合复合材料弯曲破坏形貌主要表现为上面板凹陷、下面板断裂、泡沫发生压缩变形和剪切破坏现象,缝线树脂柱出现抽拔断裂。In order to solve the problem of delamination failure of sandwich foam composites under bending load,stitching technology was used to enhance the bending properties.The influence of sewing density and panel thickness on the bending performance of the composite material was studied experimentally,and the progressive damage of bending process was analyzed by finite element simulation.The results show that the bending performance of the carbon-glass fiber laminated foam stiching composite material is positively correlated with the sewing density and panel thickness.When the sewing density is 10 mm×10 mm and the panel thickness is 5 layers,the sample has the best bending performance,with a bending strength of 73 MPa and a bending stiffness of 4.01×10^(6)N·mm^(2).The bending failure morphology of the carbon-glass fiber laminated foam stiching composite material mainly shows the depression of the upper panel,the fracture of the lower panel,the compression deformation and shear failure of the foam,and the pull-out failure of the resin column of the sewing thread.

关 键 词：夹层泡沫复合材料 缝合 弯曲性能 破坏形貌 有限元模拟 

分 类 号：TB332[一般工业技术—材料科学与工程]