...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Composite Structures >Energy absorption characteristic of sandwich shell structure against conical and hemispherical nose projectile
【24h】

Energy absorption characteristic of sandwich shell structure against conical and hemispherical nose projectile

机译：夹心壳结构对锥形和半球形鼻射流的能量吸收特性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

Present study addresses the ballistic performance and energy absorption behaviour of the hemispherical sandwich shell structure having hexagonal honeycomb core against conical and hemispherical nosed projectile. The sandwich shell had two face sheet of radius 100 and 80 mm for outer and inner shells respectively, whereas for the honeycomb core cell thickness 0.05 mm, cell size 3.2 mm and core height 20 mm were considered. Al-1100 H12 was used for both the shell, whereas for the honeycomb core Al - 3003 H18 was employed. The projectiles of diameter 19 mm, length 50.8 mm and mass 52.5 g were hit on the crown of the sandwich shell. The experiments were performed using the pneumatic gun, whereas the ABAQUS/explicit solver was used for numerical simulations. The response of the sandwich shell was studied in terms of ballistic limit, residual velocity, failure modes and energy absorption by the sandwich structure. Numerical study further extended to perform parametric studies to investigate the effect of the face sheet thickness, core cell size and cell wall thickness on the response of the sandwich shell against conical and hemispherical projectile impact. The conical projectile required less energy for perforation as compared to the hemispherical nosed projectile.
机译：目前的研究解决了具有六角形蜂窝芯对锥形和半球鼻射射的半球夹心壳结构的弹道性能和能量吸收行为。外壳的夹层壳具有两个半径100和80mm的面板，而外壳，而对于蜂窝芯电池厚度0.05mm，考虑电池尺寸3.2mm，核心高度20mm。 Al-1100 H12用于壳体，而对于蜂窝核心，使用3003 H18。直径19毫米，长度为50.8毫米和质量52.5g的射弹。夹在三明治壳的冠部上。使用气动喷枪进行实验，而ABAQUS /显式求解器用于数值模拟。在夹层结构的弹道极限，残余速度，故障模式和能量吸收方面研究了夹层壳的响应。数值研究进一步扩展以进行参数化研究，以研究面板厚度，芯细胞尺寸和细胞壁厚度对夹心壳对锥形和半球射弹冲击响应的影响。与半球形鼻子射弹相比，锥形射弹需要较少的穿孔能量。

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号