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基于缩放实验的Whipple结构撞击特性

张晓天 贾光辉

张晓天, 贾光辉. 基于缩放实验的Whipple结构撞击特性[J]. 北京航空航天大学学报, 2013, 39(2): 168-172,177.
引用本文: 张晓天, 贾光辉. 基于缩放实验的Whipple结构撞击特性[J]. 北京航空航天大学学报, 2013, 39(2): 168-172,177.
Zhang Xiaotian, Jia Guanghui. Investigation of Whipple shield hypervelocity impact based on scaled test method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(2): 168-172,177. (in Chinese)
Citation: Zhang Xiaotian, Jia Guanghui. Investigation of Whipple shield hypervelocity impact based on scaled test method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(2): 168-172,177. (in Chinese)

基于缩放实验的Whipple结构撞击特性

基金项目: 国家空间碎片专题资助项目(K020110-1/3/6)
详细信息
  • 中图分类号: V414.6

Investigation of Whipple shield hypervelocity impact based on scaled test method

  • 摘要: 针对航天器空间碎片防护问题,基于缩放实验方法,开展了7 km/s以上超高速碰撞仿真研究.建立了单板和Whipple防护结构的仿真模型,并对铝-铝撞击问题和镉-镉撞击问题进行了多工况仿真.通过实验结果与数值仿真的对比,表明了数值仿真技术的正确性,并从仿真角度验证了缩放实验方法的有效性.对缩放实验方法的适用性进行了仿真验证,结果表明该方法对弹丸形状适用性较好,对3~4 km/s以上撞击速度的适用性较好,但对Whipple防护结构后板存在一定误差.分析了Whipple结构后板的失效模式,提出了失效模式的不连续性导致了缩放实验方法的误差.最后通过数值仿真计算了Whipple结构7 km/s以上弹道极限特性,提出了失效模式的不连续性造成了在该速度段弹道极限曲线的分叉现象.

     

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出版历程
  • 收稿日期:  2011-01-06
  • 网络出版日期:  2013-02-28

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