| 航空航天返回过程的轻质能量吸收器 |
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| 引用本文： | 秦福德,童明波,何思渊,张勇明,何德坪.航空航天返回过程的轻质能量吸收器[J].东南大学学报(自然科学版),2009,39(4). |
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| 作者姓名： | 秦福德 童明波 何思渊 张勇明 何德坪 |
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| 作者单位： | 1. 南京航空航天大学航空宇航学院,南京,210016
2. 东南大学材料科学与工程学院,南京,210096 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目，南京航空航天大学博士学位论文创新与培优基金资助项目 |
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| 摘 要： | 采用精确控制的多种高孔隙率泡沫铝作为轻质能量吸收器,解决航空航天器返回地面及空降、空投着陆瞬间人员和装备的冲击过载问题.研究了轻质能量吸收器在航空航天返回和空降、空投应用中的阻尼减振和能量吸收性能.建立了带轻质能量吸收器的着陆系统与地面撞击的有限元模型,采用非线性动态仿真软件MSC.Dytran进行了仿真计算.在试验台上进行了试件的冲击试验,并将理论计算与试验结果进行了对比分析,两者基本吻合.结果表明:利用高孔隙率泡沫铝作为轻质能量吸收器可以一次降低返回载荷着陆动载超过30g,并可获得较长的塑性变形延时时间以平稳吸收返回载荷冲击能量,从而有效保护人员和设备的安全.
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| 关 键 词： | 高孔隙率泡沫铝 航空航天 返回着陆 减振 能量吸收器 |
Light energy absorber in aeronautic and astronautic recovery |
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| Qin Fude,Tong Mingbo,He Siyuan,Zhang Yongming,He Deping.Light energy absorber in aeronautic and astronautic recovery[J].Journal of Southeast University(Natural Science Edition),2009,39(4). |
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| Authors: | Qin Fude Tong Mingbo He Siyuan Zhang Yongming He Deping |
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| Institution: | Qin Fude1 Tong Mingbo1 He Siyuan2 Zhang Yongming2 He Deping2(1College of Aerospace Engineering,Nanjing University of Aeronautics , Astronautics,Nanjing 210016,China)(2 School of Materials Science , Engineering,Southeast University,Nanjing 210096,China) |
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| Abstract: | To solve the problem of impact overloads on crew and equipments at the moment when aerospace recovery,airborne and airdrop land on the ground,this paper proposes that the Al foams with precisely controlled high porosities can be used as the material of light energy absorber.Its vibration reduction and energy absorption performance in aerospace recovery or airborne and airdrop are discussed.The finite element model(FEM) of landing system with the light energy absorber impacting the ground was established and... |
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| Keywords: | high porosity Al foam aeronautics and astronautics recovery and landing vibration reduction energy absorber |
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