蜂窝状三维机织复合材料的制备及压缩失效行为研究

Study on preparation and compression failure behavior of 3D woven honeycomb composite materials

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摘要为解决蜂窝结构在使用过程中蜂窝壁黏结处易开裂的结构失效性问题,本文以1000 D芳纶长丝为增强体,环氧树脂为基体,使用2.5D织机和真空辅助树脂传递模塑(VARTM)工艺制备了一体化纤维增强结构的蜂窝状三维机织复合材料,并分析得出在受到面外载荷的情况下,蜂窝状三维机织复合材料的破坏模式为纤维断裂和基体破坏及蜂窝整体的压溃和屈曲折叠破坏。为了更加准确地探究蜂窝状三维机织复合材料在受到面外压缩载荷时的力学响应和损伤演化,通过数值仿真的方法,建立了蜂窝状三维机织复合材料多尺度损伤模型,通过和试验结果进行对比,发现两者具有良好的吻合性,最后对蜂窝状三维机织复合材料进行了结构参数化的讨论,探究了蜂窝边长、壁厚对蜂窝面外压缩性能的影响。 To address the issue of structural failure due to cracking at the adhesive joints of honeycomb walls during use,this paper utilizes 1000 D aramid fibers as reinforcement and epoxy resin as the matrix.A 2.5D loom and vacuum assisted resin transfer molding(VARTM)process were used to prepare an integrated fiber-reinforced honeycomb three-dimensional woven composite material.The failure modes of the honeycomb three-dimensional woven composite material under out-of-plane loads were analyzed,revealing that the failure modes include fiber breakage,matrix failure,and overall crushing and buckling collapse of the honeycomb structure.To more accurately investigate the mechanical response and damage evolution of the 3D woven honeycomb composite material under outof-plane compressive loads,a multi-scale damage model of the 3D woven honeycomb composite material was estab lished using numerical simulation.By comparing the model with experimental results,it was found that the two show good agreement.Finally,a structural parameterization discussion of the 3D woven honeycomb composite material was conducted,exploring the influence of honeycomb side length and wall thickness on the out-of-plane compres sive performance of the honeycomb.

作者郭敬焦亚男周庆万喜莉陈利 GUO Jing;JIAO Yanan;ZHOU Qing;WAN Xili;CHEN Li(School of Textile Science and Engineering,Tianjin University of Technology,Tianjin 300387,China;Key Laboratory of Advanced Textile Composite Materials,Ministry of Education,Tianjin University of Technology,Tianjin 300387,China;Beijing Punotai New Material Technology Co.,Ltd.,Beijing 102200,China)

机构地区天津工业大学纺织科学与工程学院天津工业大学先进纺织复合材料教育部重点实验室北京普诺泰新材料科技有限公司

出处《复合材料科学与工程》北大核心 2025年第9期55-64,共10页 Composites Science and Engineering

基金国家重点研发计划(2022YFB3706100)。

关键词蜂窝结构三维机织复合材料面外压缩行为多尺度仿真 honeycomb structure 3D woven composite material out of plane compressive behavior multi-scale simulation

分类号 TB332 [一般工业技术—材料科学与工程]

作者简介第一作者:郭敬(1999-),男,硕士研究生,主要从事先进复合材料力学性能方面的研究;通信作者:焦亚男(1971-),女,博士,研究员,主要从事纺织复合材料结构与性能方面的研究,jiaoyn@tiangong.edu.cn。