表面覆水对浅埋爆炸冲量传递的影响

高文博; 赵振宇; 任建伟; 卢天健

doi:10.11993/j.issn.2096-3920.2022.03.003

表面覆水对浅埋爆炸冲量传递的影响

doi: 10.11993/j.issn.2096-3920.2022.03.003

高文博^1,2,
赵振宇^1,2,
任建伟^1,2,
卢天健^1,2

1. 南京航空航天大学机械结构力学及控制国家重点实验室, 江苏南京, 210016;
2. 南京航空航天大学多功能轻量化材料与结构工信部重点实验室, 江苏南京, 210016

基金项目:

国家自然科学基金(11972185,12002156)、中国博士后科学基金(2020M671473).

详细信息

作者简介:
高文博(1999-),男,在读硕士,主要研究方向为强动载荷下轻质材料与结构力学行为.

中图分类号: TJ630.1;TB71.2
计量
- 文章访问数: 110
- HTML全文浏览量: 1
- PDF下载量: 13
- 被引次数: 0
出版历程
- 收稿日期: 2022-02-18
- 网络出版日期: 2022-07-18

Effects of Water Covering on Impulse Transfer in Shallow Buried Explosions

1. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

摘要

摘要: 表面覆水浅埋爆炸是装甲车辆在滩涂地区作战的主要威胁之一。由于同时具有水层和砂层的影响,表面覆水浅埋爆炸的冲量传递特性与传统浅埋爆炸差异较大。为精细表征表面覆水对浅埋炸药爆炸冲量传递的影响, 文章借助 AUTODYN 有限元软件, 采用流固耦合算法对表面覆水的浅埋爆炸过程进行数值仿真。研究表明, 流固耦合方法能够有效仿真表面覆水工况下浅埋爆炸; 表面覆水增强了浅埋爆炸中传递给目标的冲量, 且冲量随水层厚度的增加逐渐增大; 同时, 炸药底部的垫层厚度对冲量传递也有一定的影响。文中结果可为滩涂地区用装甲车辆高性能防护结构设计提供有效的研究手段。
- 浅埋爆炸 /
- 表面覆水 /
- 冲量传递 /
- 流固耦合
Abstract: Shallow buried explosions covered by water are one of the major threats to armored vehicles fighting in tidal flat areas. Based on the influence of both the water layer and sand layer, the impulse transfer characteristics of shallow buried explosions covered by water are significantly different from those of traditional shallow buried explosions. To characterize the influence of water covering on impulse transfer, this study employed a fluid-structure coupling algorithm to simulate shallow buried explosions covered by water using the finite element software AUTODYN. The results demonstrate that the fluid-structure coupling method can effectively simulate shallow buried explosions covered by water. Water covering enhances the impulse transmitted to the target in shallow buried explosions and the impulse increases with an increasing depth of the water layer. The thickness of the cushion layer placed at the bottom of the explosive also affects impulse transfer. The results of this study can provide useful guide-lines for designing high-performance protection structures for armored vehicles used in tidal flat areas.
- shallow buried explosion /
- water covering /
- impulse transfer /
- fluid-structure coupling

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