Nuclear safety characterisation of PBX explosives under low-velocity impact conditions

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Annals of Nuclear Energy Pub Date : 2024-10-19 DOI:10.1016/j.anucene.2024.110984

Xiaohui Guo, Xingfu Cai, Yonggang Huo, Haowei Wang

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.

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低速冲击条件下 PBX 炸药的核安全特征

防止 PBX 意外点火对确保核安全至关重要。以周向动力学（PD）为基础的计算模型被用来研究 PBX 在不同条件下的动态损伤响应。模拟结果表明，由于应力波反射和损伤累积引起的不稳定性，PBX 的动态损伤显示出阶段性特征。粘结剂强度的增加会增强粘结剂内部的能量消耗，从而减轻 PBX 的整体损伤。微结构参数的变化，特别是 PBX 的比表面积，会影响界面脱粘所需的断裂功，从而改变 PBX 的损坏特性。这项研究通过研究爆炸物的冲击速度和内在参数，加深了我们对爆炸物动态破坏机制的理解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Annals of Nuclear Energy 工程技术-核科学技术

CiteScore

4.30

自引率

21.10%

发文量

632

审稿时长

7.3 months

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.