TY - JOUR
T1 - Ubiquitiform Hotspot Ignition Model of PBX for Shock Initiation
AU - Liu, Chun
AU - Ou, Zhuo Cheng
AU - Duan, Zhuo Ping
AU - Huang, Feng Lei
N1 - Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/10
Y1 - 2021/10
N2 - 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.
AB - 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.
KW - Energetic Material
KW - Hotspot
KW - Ignition Reaction Rate
KW - Nested Ubiquitiform Model
UR - https://www.scopus.com/pages/publications/85113929711
U2 - 10.1002/prep.202100089
DO - 10.1002/prep.202100089
M3 - Article
AN - SCOPUS:85113929711
SN - 0721-3115
VL - 46
SP - 1561
EP - 1571
JO - Propellants, Explosives, Pyrotechnics
JF - Propellants, Explosives, Pyrotechnics
IS - 10
ER -