弹丸穿透混凝土目标的周流体力学建模

IF 5.1 2区 工程技术 Q1 ENGINEERING, MECHANICAL
Xin Liu , Xiangzhen Kong , Qin Fang , Yi Meng , Yong Peng
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引用次数: 0

摘要

本文提出了一种基于非平凡状态的周动力学(NOSB-PD)模型,用于模拟射弹穿透混凝土目标的情况。在该模型中,首先将最近提出的孔方混凝土材料模型应用到 NOSB-PD 框架中,以描述混凝土材料在穿透荷载作用下的复杂动态行为和失效,然后提出改进的点到体积离散摩擦接触模型,以模拟弹丸与目标之间的物理相互作用。在进行无网格离散化和显式时间积分后,利用所提出的 NOSB-PD 模型对两组弹丸穿透低强度和高强度混凝土目标的实验进行了数值预测。结果表明,数值预测结果与相应的试验数据(包括穿透深度、弹丸减速、弹丸变形和混凝土靶的破坏情况)吻合良好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Peridynamics modelling of projectile penetration into concrete targets

A non-ordinary state-based peridynamics (NOSB-PD) model is proposed to simulate the projectile penetration into concrete targets. In this model, the Kong-Fang concrete material model recently proposed is firstly implemented into the NOSB-PD framework to describe the complex dynamic behavior and failures in concrete material subjected to penetration loading, and then an improved point-to-volume discrete frictional contact model is proposed to simulate the physical interaction between projectile and target. After the mesh-free discretization and explicit time integration, the proposed NOSB-PD model is used to numerically predict two sets of projectile penetration experiments into low-strength and high-strength concrete targets. And numerical predictions are found to be in good agreements with corresponding test data including penetration depth, projectile deceleration, deformation of projectile and failures in concrete targets.

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来源期刊
International Journal of Impact Engineering
International Journal of Impact Engineering 工程技术-工程:机械
CiteScore
8.70
自引率
13.70%
发文量
241
审稿时长
52 days
期刊介绍: The International Journal of Impact Engineering, established in 1983 publishes original research findings related to the response of structures, components and materials subjected to impact, blast and high-rate loading. Areas relevant to the journal encompass the following general topics and those associated with them: -Behaviour and failure of structures and materials under impact and blast loading -Systems for protection and absorption of impact and blast loading -Terminal ballistics -Dynamic behaviour and failure of materials including plasticity and fracture -Stress waves -Structural crashworthiness -High-rate mechanical and forming processes -Impact, blast and high-rate loading/measurement techniques and their applications
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