Theoretical study of the void collapse and shear band formation mechanism for β-HMX

被引：2
|
作者：
Long, Yao [1 ,2 ]
Chen, Jun [1 ,2 ]
机构：
[1] Inst Appl Phys & Computat Math, Lab Computat Phys, Beijing, Peoples R China
[2] Inst Appl Phys & Computat Math, Lab Computat Phys, Beijing 100088, Peoples R China
来源：
PROPELLANTS EXPLOSIVES PYROTECHNICS | 2023年 / 48卷 / 07期
基金：
中国国家自然科学基金;
关键词：
molecular dynamics; shear band; void collapse; ANGLE NEUTRON-SCATTERING; HOT-SPOT FORMATION; CRYSTAL-STRUCTURE; DYNAMICS; SIMULATIONS; CHEMISTRY; FORM;
D O I：
10.1002/prep.202200326
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Based on molecular dynamics simulation, we obtain a shear band formation mechanism for beta-HMX. The shock wave reflected at void face induces rarefaction wave, and the velocity difference between rarefaction wave zone and shock wave zone induces slipping. A set of physical models are developed to describe the wave reflection, shear band expansion and energy dissipation. The orientation angle, face indices, expansion velocity and formation energy of shear bands are calculated. A complete physical picture for shear band formation is obtained.
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页数：11
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