Xiaohui Guo, Xingfu Cai, Yonggang Huo, Haowei Wang
{"title":"Nuclear safety characterisation of PBX explosives under low-velocity impact conditions","authors":"Xiaohui Guo, Xingfu Cai, Yonggang Huo, Haowei Wang","doi":"10.1016/j.anucene.2024.110984","DOIUrl":null,"url":null,"abstract":"<div><div>The prevention of accidental ignition in PBX is paramount for ensuring nuclear safety. A computational model, grounded in peridynamics(PD), has been employed to examine the dynamic damage response of PBX under varying conditions. The simulation outcomes suggest that the dynamic damage of PBX displays staged characteristics, attributable to the instability induced by stress wave reflection and damage accumulation. An increase in binder strength results in enhanced energy dissipation within the binder, consequently mitigating the overall damage to the PBX. Changes in microstructural parameters, specifically the specific surface area of the PBX, influence the fracture work required for interfacial debonding, thereby altering the damage characteristics of the PBX. This study enhances our understanding of the dynamic damage mechanisms of explosives by investigating the impact velocity and intrinsic parameters of the explosive.</div></div>","PeriodicalId":8006,"journal":{"name":"Annals of Nuclear Energy","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annals of Nuclear Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0306454924006479","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
The prevention of accidental ignition in PBX is paramount for ensuring nuclear safety. A computational model, grounded in peridynamics(PD), has been employed to examine the dynamic damage response of PBX under varying conditions. The simulation outcomes suggest that the dynamic damage of PBX displays staged characteristics, attributable to the instability induced by stress wave reflection and damage accumulation. An increase in binder strength results in enhanced energy dissipation within the binder, consequently mitigating the overall damage to the PBX. Changes in microstructural parameters, specifically the specific surface area of the PBX, influence the fracture work required for interfacial debonding, thereby altering the damage characteristics of the PBX. This study enhances our understanding of the dynamic damage mechanisms of explosives by investigating the impact velocity and intrinsic parameters of the explosive.
期刊介绍：
Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.
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