• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>20th space simulation conference on changing testing paradigm >Hypervelocity meteorite impact simulation
【24h】

Hypervelocity meteorite impact simulation

机译：超高速陨石撞击模拟

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

摘要

A model has been created for the numerical simulation of a penetrator particle impacting a plate at very high velocities. The analysis was conducted with the finite element hydrocode, LS-DYNA3D. The model attmpts to predict the consequences of a meteorite particle hitting a spaceraft in orbit. Results show that the breakup mechanism of the penetrating particle is highly dependent on the magnitude of the impact velocity relative to the elastic wave velocity (speed of sound) of the penetrator's material. The analysis concentrates on understanding the physics of hypervelocity impact and the importance of parameters such as relative particle and plate sizes, impact velocity, particle shape, and impact angle. Modeling of material properties in the high strain rate plastic regime needs to be augmented and verified with pertinent experimental data. Additional codes may be required for analysis capabilities absent in LSDYNA3D such as thermal modeling and tracking of the debris cloud generated by the breakup of particle and plate.
机译：已经创建了一个模型，用于以很高的速度数值模拟穿透板的穿透颗粒。使用有限元液压代码LS-DYNA3D进行分析。该模型试图预测陨石粒子撞击轨道上的航天器的后果。结果表明，穿透粒子的破裂机理高度取决于撞击速度相对于穿透物材料的弹性波速度（声速）的大小。该分析着重于了解超高速撞击的物理性质和参数的重要性，例如相对粒子和板尺寸，撞击速度，粒子形状和撞击角度。在高应变速率塑性条件下的材料特性建模需要增强并通过相关实验数据进行验证。 LSDYNA3D中缺少分析功能可能需要其他代码，例如热建模和跟踪由粒子和平板破裂产生的碎片云的跟踪。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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