Ubiquitiform Hotspot Ignition Model of PBX for Shock Initiation

被引：5

作者：

Liu, Chun ^{[1
]}

Ou, Zhuo Cheng ^{[1
]}

Duan, Zhuo Ping ^{[1
]}

Huang, Feng Lei ^{[1
]}

机构：

[1] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China

来源：

PROPELLANTS EXPLOSIVES PYROTECHNICS | 2021年 / 46卷 / 10期

关键词：

Energetic Material; Hotspot; Nested Ubiquitiform Model; Ignition Reaction Rate; HOT-SPOT IGNITION; ENERGETIC MATERIAL; PORE COLLAPSE; VOID COLLAPSE; EXPLOSIVES; HMX; DETONATION; MECHANISMS; SIMULATION; SIZE;

D O I：

10.1002/prep.202100089

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this study, a ubiquitiform hotspot ignition model with cross-scale characteristics is proposed to describe the ignition stage of PBX, which can account for heterogeneous effects. Firstly, a ubiquitiform model of hotspot intensity is obtained. The model can describe the hotspot information after PBX is impacted. In which, a hotspot distribution model based on the nested ubiquitiform model of explosives is used to characterize geometric properties of hotspot, including the size and location of hotspot; and the Weibull statistical distribution function is used to describe the distribution of hotspot intensity. Then, combining the ubiquitiform model of hotspot intensity with Arrhenius model, the ubiquitiform hotspot ignition model is developed to characterize the ignition stage of PBX. Finally, it is found that the equivalent reaction rate constants calculated by our ignition model are in good agreement with the previous experimental data.

引用

页码：1561 / 1571

页数：11

共 62 条

[1] A model for hot spot formation in shocked energetic materials [J].

Akiki, Michel ;

Menon, Suresh .

COMBUSTION AND FLAME, 2015, 162 (05) :1759-1771

[2]

[Anonymous], 1998, 11 S INT DET SNOWM V

[3]

[Anonymous], 1985, P 8 S INT DET ALB NM

[4]

Arrhenius S., 1889, Z PHYS CHEM, V4, P96, DOI [DOI 10.1515/ZPCH-1889-0408, 10.1515/zpch-1889-0408]

[5]

Baer M.R., 2007, ShockWave Science and Technology Reference Library, P321, DOI DOI 10.1007/978-3-540-68408-4_8

[6] Shock initiation of multi-component insensitive PBX explosives: Experiments and MC-DZK mesoscopic reaction rate model [J].

Bai, Zhiling ;

Duan, Zhuoping ;

Wen, Lijing ;

Zhang, Zhenyu ;

Ou, Zhuocheng ;

Huang, Fenglei .

JOURNAL OF HAZARDOUS MATERIALS, 2019, 369 :62-69

[7]

Bowden F.P., 1951, INITIATION GROWTH EX, P104

[8] SHOCK INITIATION OF SOLID EXPLOSIVES [J].

CAMPBELL, AW ;

DAVIS, WC ;

RAMSAY, JB ;

TRAVIS, JR .

PHYSICS OF FLUIDS, 1961, 4 (04) :511-521

[9] Analysis of microstructure-dependent shock dissipation and hot-spot formation in granular metalized explosive [J].

Chakravarthy, Sunada ;

Gonthier, Keith A. .

JOURNAL OF APPLIED PHYSICS, 2016, 120 (02)

[10]

Chaudhri M.M., 1989, PREPRINTS 9 S INT DE, P331

← 1 2 3 4 5 6 7 →