Dynamic Response of Polyurethane-hemisphere Sandwich Structure under Action of Explosive Shock Wave

Teng PAN; Xiaobing BIAN; Mingzheng YUAN; Liangliang WANG; Yuan HUANG; Guangyan HUANG; Hong ZHANG

doi:10.12382/bgxb.2023.0645

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Dynamic Response of Polyurethane-hemisphere Sandwich Structure under Action of Explosive Shock Wave

更新时间：2025-08-18

- Dynamic Response of Polyurethane-hemisphere Sandwich Structure under Action of Explosive Shock Wave
- Acta Armamentarii Vol. 44, Issue 12, Pages: 3580-3589(2023)
- 作者机构：
  
  1. 北京理工大学爆炸科学与技术国家重点实验室, 北京 100081
  2. 北京理工艾尔安全科技有限公司, 北京 100081
  3. 北京理工大学重庆创新中心现代兵器技术实验室, 重庆 401120
- 作者简介：
- 基金信息：
- DOI：10.12382/bgxb.2023.0645
  CLC：
- Received：12 July 2023，
  
  Published Online：12 January 2024，
  
  Published：30 December 2023
- 稿件说明：
移动端阅览
Teng PAN, Xiaobing BIAN, Mingzheng YUAN, et al. Dynamic Response of Polyurethane-hemisphere Sandwich Structure under Action of Explosive Shock Wave[J]. Acta Armamentarii, 2023, 44(12): 3580-3589.
DOI：

Teng PAN, Xiaobing BIAN, Mingzheng YUAN, et al. Dynamic Response of Polyurethane-hemisphere Sandwich Structure under Action of Explosive Shock Wave[J]. Acta Armamentarii, 2023, 44(12): 3580-3589. DOI： 10.12382/bgxb.2023.0645.

摘要

提高防爆装备的抗爆性能已经成为热门的研究课题

目前的防爆装备主要采用金属制成

一般重量大

采用点阵夹芯结构可以实现轻量化。点阵夹芯结构具有良好的能量吸收效率和在高应变率下的优异力学性能

但以往的防爆研究未考虑过不易变形的半球型点阵

复合了聚氨酯泡沫的抗爆夹芯结构研究更为少见。鉴于此

结合聚氨酯泡沫缓冲吸能以及半球结构的拱形抗变形能力提出一种新型的聚氨酯-半球夹芯结构

并且采用实验和数值模拟相结合的方法对聚氨酯-半球夹芯结构在爆炸冲击波载荷下的动态响应进行研究。研究结果表明

在500g TNT当量0.65m爆炸冲击下

相近面密度的聚氨酯-半球夹芯结构中心点位移最小

相较于铝板和纯半球夹芯板分别减小了30%和35%

纯半球夹芯板虽然吸能最多但是变形最大

聚氨酯-半球夹芯结构和铝板的吸能分别为纯半球夹芯板的85%和63%

相较于铝板

聚氨酯-半球夹芯结构在保证能量吸收效率的同时能有效减少靶板速度和应力集中。

Abstract

Improvement of blast resistance of explosion-proof equipment has become a popular research topic. The current explosion-proof equipment is mainly made of metal

generally having considerable weight

the use of lattice sandwich structure can achieve lightweight. Lattice sandwich structure has good energy absorption efficiency and excellent mechanical properties at high strain rates

but the non-deformable hemispherical lattice has not been considered in the previous explosion protection research

and the research on composite polyurethane foam explosion-resistant sandwich structure is even more rare. In view of this

a new type of polyurethane-hemispherical sandwich structure is proposed in considering the energy absorption of polyurethane foam and the arch deformation resistance of hemispherical structure

and a combination of experiment and numerical simulation is used to study the dynamic response of polyurethane-hemispherical sandwich structure under the blast shockwave loading. The results show that the center point displacement of polyurethane-hemisphere sandwich structure with the approximate surface density is the smallest under 0.65m blast impact of 500g TNT

which is 30% and 35% smaller than that of aluminum plate and pure hemisphere sandwich plate

respectively. The pure hemisphere sandwich plate absorbs the most energy but has the largest deformation

and the energy absorption of polyurethane-hemisphere sandwich structure and aluminum plate is 85% and 63% of that of the pure hemisphere sandwich plate

respectively

which shows that the incorporation of polyurethane has a significant role in ensuring the energy absorption. It can be seen that

compared with the aluminum plate

the polyurethane-hemispheres sandwich structure can effectively reduce the speed and stress concentration of the target plate while ensuring the energy absorption efficiency.

关键词

Keywords

references

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