{"title":"Numerical simulation of multi‐layer flyer impact initiation of a certain PBX explosive","authors":"Jingyao Yuan, Yingliang Duan, Yong Han","doi":"10.1002/prep.202300252","DOIUrl":null,"url":null,"abstract":"This paper addresses the problem of multi‐layer flyer impact‐induced initiation of a high‐energy explosive PBX‐1(based on 95 % TATB). The CREST reaction combustion model based on the time‐step difference method is embedded in LS‐DYNA, and the pressure history of PBX‐1 in multiple impact initiation is numerically simulated. The strengths and weaknesses of the two models are analyzed by comparing the simulation results of the pressure‐based IG model and the entropy‐based CREST model in multiple impact initiation. The results show that the CREST model is significantly better than the IG model in the problem of multiple impact initiation of PBX‐1, and it matches the experimental results better.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Propellants, Explosives, Pyrotechnics","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1002/prep.202300252","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
This paper addresses the problem of multi‐layer flyer impact‐induced initiation of a high‐energy explosive PBX‐1(based on 95 % TATB). The CREST reaction combustion model based on the time‐step difference method is embedded in LS‐DYNA, and the pressure history of PBX‐1 in multiple impact initiation is numerically simulated. The strengths and weaknesses of the two models are analyzed by comparing the simulation results of the pressure‐based IG model and the entropy‐based CREST model in multiple impact initiation. The results show that the CREST model is significantly better than the IG model in the problem of multiple impact initiation of PBX‐1, and it matches the experimental results better.
期刊介绍：
Propellants, Explosives, Pyrotechnics (PEP) is an international, peer-reviewed journal containing Full Papers, Short Communications, critical Reviews, as well as details of forthcoming meetings and book reviews concerned with the research, development and production in relation to propellants, explosives, and pyrotechnics for all applications. Being the official journal of the International Pyrotechnics Society, PEP is a vital medium and the state-of-the-art forum for the exchange of science and technology in energetic materials. PEP is published 12 times a year.
PEP is devoted to advancing the science, technology and engineering elements in the storage and manipulation of chemical energy, specifically in propellants, explosives and pyrotechnics. Articles should provide scientific context, articulate impact, and be generally applicable to the energetic materials and wider scientific community. PEP is not a defense journal and does not feature the weaponization of materials and related systems or include information that would aid in the development or utilization of improvised explosive systems, e.g., synthesis routes to terrorist explosives.
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