压扭超材料填充柱壳撞击固壁的动态力学行为研究  

Study on Dynamic Characteristics of Cylindrical Shell Filled with Compression Torsion Double Helix Metamaterial

作　　者：胡建星 刘兴华[2] 王永滨[2] 张朝 贾娇 HU Jianxing;LIU Xinghua;WANG Yongbin;ZHANG Zhao;JIA Jiao(Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China;Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China;School of Flight,Beihang University,Beijing 100191,China)

机构地区：[1]中国科学院力学研究所,北京100190 [2]北京空间机电研究所,北京100094 [3]北京航空航天大学飞行学院,北京100191

出　　处：《航天返回与遥感》2023年第5期20-28,共9页Spacecraft Recovery & Remote Sensing

基　　金：中国航天科技集团航天进入减速与着陆技术实验室开放基金(EDL19092138)。

摘　　要：航天器着陆时的冲击防护是保证航天器安全着陆的关键技术,针对航天器腿式着陆器对缓冲装置的需求,文章提出了一种新型能量吸收结构——将压扭双螺旋超材料填充于圆柱壳内部,并基于ABAQUS软件建立了该吸能结构的有限元计算模型,模拟了其撞击固壁时的动态力学行为,开展了系统的参数化研究分析。模拟和分析结果表明:1)由于耦合作用,填充了压扭双螺旋超材料的圆柱壳吸能盒的能量吸收能力逐渐会大于压扭双螺旋超材料和圆柱壳能量吸收的线性叠加;2)圆柱壳吸能盒壁厚和压扭双螺旋超材料连杆个数是影响其动态力学特性和能量吸收的关键参数。上述结论可为内充压扭超材料圆柱壳式吸能盒在航天器着陆器中的应用提供一定技术参考。Spacecraft landing impact protection is the key technology to ensure the safe landing of spacecraft.Aiming at the demand of buffer device in legged lander of spacecraft,a new energy absorption structure is proposed in this paper.The new energy-absorbing structure is filling with a compression-torsion double-helix metamaterial inside a cylindrical shell.Based on ABAQUS platform,a finite element model is established to investigate the dynamic mechanical behavior of the new energy-absorbing structure impacting onto a solid wall,and then parametric studies are performed.These results indicate that due to the coupling effect,the energy absorption of the new energy-absorbing structure will gradually be greater than the linear superposition of the energy absorption of the compression-torsion double-helix metamaterial and the cylindrical shell.And the wall thickness of cylindrical shell and the number of compression-torsion double helix metamaterial links are the key parameters affecting its dynamic mechanical characteristics and energy absorption.These results can provide technical reference for the application of the cylindrical shell buffer device filled with compression-torsion metamaterial in the impact protection of spacecraft soft landing.

关 键 词：压扭双螺旋超材料 动态性能 比吸能 冲击防护 航天器软着陆 

分 类 号：V415.4[航空宇航科学与技术—航空宇航推进理论与工程]