一种森林灭火弹战斗部爆炸的数值模拟
王紫民1，武建德2
（1.山西工程技术学院 机电系，山西 阳泉 045000；2.中北大学 机械工程学院，山西 太原 030051）
摘要：介绍了一款基于迫击炮发射的森林灭火弹。该灭火弹在设计中，综合考虑了灭火距离及灭火效果，并在保证灭火安全等要素下，将弹体的战斗部增大一倍，外置于迫击炮进行发射，主要是为了增加灭火剂装填量，以增大灭火面积。在战斗部弹体材质的选取上，考虑了钢质薄壳和ABS工程塑料两种材质，并用ANSYS/LS-DYNA显式动力学软件分别对两种材质进行了爆炸的数值模拟，从爆炸云图及选取的不同材质的5组节点径向爆炸速度曲线图上，理论分析出运用ABS塑料对爆炸冲击的能量吸收较大，灭火面积也大，初步验证了运用ABS工程塑料的可行性，为弹体新材料的选取提供参考。
关键词：灭火弹；ANSYS/LS-DYNA；ABS工程塑料；爆炸仿真；数值模拟
中图分类号：X913.4；TH49；TP391.7 文献标志码：A doi：10.3969/j.issn.1006-0316.2019.12.006
文章编号：1006－0316 (2019) 12－0032－04
The Explosion Simulation of a New Forest Fire Extinguishing Bomb
WANG Zimin1，WU Jiande2
( 1.Department of Mechanical and Electrical Engineering, Shanxi Institute of Technology, Yangquan 045000, China; 2.School of Mechanical Engineering, North University of China, Taiyuan 030051, China )
Abstract：A new type of forest fire extinguisher based on mortars is introduced in this paper. In the design of the fire extinguisher, the fire extinguishing distance and fire extinguishing effect are considered synthetically, and under the condition of ensuring the fire extinguishing safety and other factors, the warhead of the missile body is doubled and launched by mortar, mainly in order to increase the amount of fire extinguishing agent and increase the fire extinguishing area. In the selection of warhead shell material, two kinds of materials, steel shell and ABS engineering plastic, are considered in the selection, and the numerical simulation of explosion of the two materials is carried out by ANSYS/LS-DYNA explicit dynamics software respectively. From the explosion cloud picture and the radial explosion velocity curve of five groups of nodes of different materials, it is theoretically concluded that the energy absorption of explosion impact by ABS plastic is large, and the theoretical fire extinguishing area is also large. The feasibility of using ABS engineering plastics is preliminarily verified, which provides a reference for the selection of new materials for projectiles.
Key words：fire extinguishing bomb；ANSYS/LS-DYNA；ABS engineering plastics；explosion simulation；numerical simulation
———————————————
收稿日期：2019－08－09
作者简介：王紫民（1989－），男，山西阳泉人，硕士研究生，助教，主要研究方向为新型森林灭火弹研制、煤机关键零部件优化设计与仿真；武建德（1969－），男，山西太谷人，硕士研究生，高级实验师、硕士生导师，主要研究方向为新型森林灭火弹的研制、机械系统性能测试与仿真。
设为首页 | 加入收藏 | 免责条款
《机械》杂志版权所有 Copyright©2008-2012 Jixiezazhi.com All Rights Reserved
电话：028-85925070 传真：028-85925073 E-mail：jixie@vip.163.com
地址：四川省成都锦江工业开发区墨香路48号 邮编：610063
Powered by PageAdmin CMS