自相似分层蜂窝结构多碰撞工况耐撞性研究  

Study on Crashworthiness of Self-Similar Hierarchical Honeycomb Structure Under Multiple Collision Conditions

作　　者：马芳武[1] 孙昊[1] 梁鸿宇 马文婷 王强[1] 蒲永锋[1] Ma Fangwu;Sun Hao;Liang Hongyu;Ma Wenting;Wang Qiang;Pu Yongfeng(Jilin University,State Key Laboratory of Automotive Simulation and Control,Changchun 130022;China FAW Group Co.,Ltd.,Changchun 130013;State Key Laboratory of Comprehensive Technology on Automobile Vibration and Noise&Safety Control,Changchun 130011)

机构地区：[1]吉林大学,汽车仿真与控制国家重点实验室,长春130022 [2]中国第一汽车股份有限公司研发总院,长春130013 [3]汽车振动噪声与安全控制综合技术国家重点实验室,长春130011

出　　处：《汽车工程》2022年第6期886-892,908,共8页Automotive Engineering

基　　金：吉林省科技发展计划项目(YDZJ202102CXJD017,20200401144GX);吉林大学研究生创新研究计划(101832020CX132)资助。

摘　　要：受马尾植物的启发,本文中提出了一种仿生自相似分层蜂窝结构,基于试验验证的有限元模型,对比分析了这种新型结构与传统蜂窝结构在多角度斜向碰撞工况下的耐撞性能,包括变形模式、应力应变曲线和吸能特性。结果表明:自相似分层蜂窝结构无论在理想正向碰撞工况还是斜向碰撞工况下都具有稳定的变形模式,且在碰撞角度变化时,具有稳定且优异的吸能性能。Enlightened by horsetail plant,a bionic self-similar hierarchical honeycomb structure is proposed in this paper. Based on the finite element model verified by test,the crashworthiness performance of the novel and traditional honeycomb structures under multi-angle oblique collision conditions are comparatively analyzed,including deformation modes,stress-strain curves and energy absorption characteristics. The results show that the selfsimilar hierarchical honeycomb structure has stable deformation mode under both ideal frontal and oblique impact conditions,and stable and excellent energy absorption performance when the impact angle changes.

关 键 词：蜂窝结构 自相似分层设计 斜向碰撞 耐撞性能 

分 类 号：U467.14[机械工程—车辆工程]