使用新型物态方程的超高速碰撞物质点法模拟

李依潇 王生捷

李依潇, 王生捷. 使用新型物态方程的超高速碰撞物质点法模拟[J]. 爆炸与冲击, 2019, 39(10): 104201. doi: 10.11883/bzycj-2018-0261
引用本文: 李依潇, 王生捷. 使用新型物态方程的超高速碰撞物质点法模拟[J]. 爆炸与冲击, 2019, 39(10): 104201. doi: 10.11883/bzycj-2018-0261
LI Yixiao, WANG Shengjie. Simulation of hypervelocity impact by the material point method coupled with a new equation of state[J]. Explosion And Shock Waves, 2019, 39(10): 104201. doi: 10.11883/bzycj-2018-0261
Citation: LI Yixiao, WANG Shengjie. Simulation of hypervelocity impact by the material point method coupled with a new equation of state[J]. Explosion And Shock Waves, 2019, 39(10): 104201. doi: 10.11883/bzycj-2018-0261

使用新型物态方程的超高速碰撞物质点法模拟

doi: 10.11883/bzycj-2018-0261
详细信息
    作者简介:

    李依潇(1990- ),男,博士研究生,oldcoon@sina.com

  • 中图分类号: O385

Simulation of hypervelocity impact by the material point method coupled with a new equation of state

  • 摘要: 为更准确地对超高速碰撞进行数值模拟、获得与实验结果相似度更高的碎片云形态,利用分子动力学方法求解材料的冷能、冷压,并结合Grover定标律方程,建立了一种表达形式简洁、可处理相变影响的新型物态方程,并代入自编柱坐标物质点法计算程序,使用新型物态方程计算所得的碎片云与使用Mie-Grüneisen、Tillotson等传统物态方程的计算结果相比,在尺寸、形态方面均能够与实验结果更好地吻合,证明了新型物态方程的有效性。
  • 图  1  冷能与体积比的关系

    Figure  1.  Relation between cold energy and volume ratio

    图  2  冷压与体积比的关系

    Figure  2.  Relation between cold pressure and volume ratio

    图  3  数值模拟结果与实验结果[15]的对比

    Figure  3.  Comparison between experimental[15] and numerical results

  • [1] LIU Menglong, WANG Qiang, ZHANG Qingming, et al. Characterizing hypervelocity(>2.5 km/s)-impact-engendered damage in shielding structures using in-situ acoustic emission: simulation and experiment [J]. International Journal of Impact Engineering, 2018, 111: 273–284. DOI: 10.1016/j.ijimpeng.2017.10.004.
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出版历程
  • 收稿日期:  2018-07-16
  • 修回日期:  2018-10-17
  • 刊出日期:  2019-10-01

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