中国物理B ›› 2021, Vol. 30 ›› Issue (10): 104701-104701.doi: 10.1088/1674-1056/abeeea

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Comparative investigation of microjetting generated from monocrystalline tin surface and polycrystalline tin surface under plane impact loading

Shao-Wei Sun(孙少伟)1,3, Guan-Qing Tang(汤观晴)2,3, Ya-Fei Huang(黄亚飞)3, Liang-Zhi Cao(曹良志)1,†, and Xiao-Ping Ouyang(欧阳晓平)1,‡   

  1. 1 School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
    2 College of Materials Science and Engineering, Hunan University, Changsha 410082, China;
    3 Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, China
  • 收稿日期:2021-01-11 修回日期:2021-03-01 接受日期:2021-03-16 发布日期:2021-10-08
  • 通讯作者: Liang-Zhi Cao, Xiao-Ping Ouyang E-mail:caolz@mail.xjtu.edu.cn;oyxp2003@aliyun.com

Comparative investigation of microjetting generated from monocrystalline tin surface and polycrystalline tin surface under plane impact loading

Shao-Wei Sun(孙少伟)1,3, Guan-Qing Tang(汤观晴)2,3, Ya-Fei Huang(黄亚飞)3, Liang-Zhi Cao(曹良志)1,†, and Xiao-Ping Ouyang(欧阳晓平)1,‡   

  1. 1 School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
    2 College of Materials Science and Engineering, Hunan University, Changsha 410082, China;
    3 Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, China
  • Received:2021-01-11 Revised:2021-03-01 Accepted:2021-03-16 Published:2021-10-08
  • Contact: Liang-Zhi Cao, Xiao-Ping Ouyang E-mail:caolz@mail.xjtu.edu.cn;oyxp2003@aliyun.com

摘要: With considering the scattering effect of grain boundary and the grain orientation, the molecular dynamics is used for the first time to comparatively investigate microjetting generated by monocrystalline tin surface and polycrystalline tin surface under plane impact loading in this work. The research results show that when the impact velocity is low, the scattering effect of grain boundary and different grain orientations in a polycrystalline tin will cause the sample to melt inhomogeneously, leading the shock wave front to attenuate, meanwhile, the inhomogeneous melting can result in jet deviating. Comparing with monocrystalline tin, the jet head velocity, jet velocity coefficient, and jet mass coefficient of polycrystalline tin at low impact velocity are all low. Moreover, as the impact velocity increases, this influence decreases and the microjetting results of polycrystalline tin and monocrystalline tin tend to be consistent with each other.

关键词: molecular dynamics, shock wave, microjetting, monocrystalline tin, polycrystalline tin

Abstract: With considering the scattering effect of grain boundary and the grain orientation, the molecular dynamics is used for the first time to comparatively investigate microjetting generated by monocrystalline tin surface and polycrystalline tin surface under plane impact loading in this work. The research results show that when the impact velocity is low, the scattering effect of grain boundary and different grain orientations in a polycrystalline tin will cause the sample to melt inhomogeneously, leading the shock wave front to attenuate, meanwhile, the inhomogeneous melting can result in jet deviating. Comparing with monocrystalline tin, the jet head velocity, jet velocity coefficient, and jet mass coefficient of polycrystalline tin at low impact velocity are all low. Moreover, as the impact velocity increases, this influence decreases and the microjetting results of polycrystalline tin and monocrystalline tin tend to be consistent with each other.

Key words: molecular dynamics, shock wave, microjetting, monocrystalline tin, polycrystalline tin

中图分类号:  (Molecular dynamics methods)

  • 47.11.Mn
47.40.Nm (Shock wave interactions and shock effects) 31.15.xv (Molecular dynamics and other numerical methods) 34.20.Cf (Interatomic potentials and forces)