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弹箭与制导学报 >

2021 , Vol. 41 >Issue 2: 72 - 77

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2021.02.016

钢筋混凝土靶动态球形空腔膨胀数值模拟

  • 邓勇军 1, 2 ,
  • 刘洋村 1, 2 ,
  • 姚勇 1, 2
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  • 1 工程材料与结构冲击振动四川省重点实验室,四川绵阳 621000
  • 2 西南科技大学土木工程与建筑学院,四川绵阳 621000

邓勇军(1987—),男,四川遂宁人,助理研究员,博士,研究方向:穿甲侵彻及毁伤效能。

收稿日期: 2020-03-20

  网络出版日期: 2025-02-25

基金资助

国家自然科学基金(11872118)

西南科技大学博士基金(19zx7154)

收起

Numerical Simulation of Dynamic Spherical Cavity Expansion for Reinforced Concrete Targets

  • DENG Yongjun 1, 2 ,
  • LIU Yangcun 1, 2 ,
  • YAO Yong 1, 2
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  • 1 Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province,Sichuan Mianyang 621000,China
  • 2 School of Civil Engineering and Architecture,Southwest University of Science and Technology,Sichuan Mianyang 621000,China

Received date: 2020-03-20

  Online published: 2025-02-25

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摘要

采用LS-DYNA有限元软件对钢筋混凝土靶动态空腔膨胀物理过程进行了数值模拟。获得了不同配筋率下,混凝土空腔边界的膨胀压力与膨胀速度的关系,以及不同空腔膨胀压力下混凝土中某时刻的径向应力场分布,探讨了钢筋对混凝土动态空腔膨胀过程的影响。结果表明:钢筋的存在有效约束了周围混凝土,减小了混凝土各区域大小,同时降低了混凝土空腔边界的膨胀速度。

关键词： 钢筋混凝土; 空腔膨胀; 约束效应; 数值模拟

本文引用格式

邓勇军 , 刘洋村 , 姚勇 . 钢筋混凝土靶动态球形空腔膨胀数值模拟[J]. 弹箭与制导学报, 2021 , 41(2) : 72 -77 . DOI: 10.15892/j.cnki.djzdxb.2021.02.016

Abstract

In this paper, LS-DYNA finite element software is used to simulate the dynamic cavity expansion process of reinforced concrete targets. For different reinforcement ratios, the relationship between the expansion pressure and the expansion velocity at the concrete cavity boundary, and the distribution of radial stress at a certain moment are obtained. Then the influences of reinforcement ratios on the dynamic cavity expansion process are investigated. It is found that the reinforcing bars effectively restrain the surrounding concrete, reduce the size of each region of the concrete, and decline the expansion speed of the concrete cavity boundary.

Key words： reinforced concrete; cavity expansion; confinement effect; numerical simulation

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参考文献

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