兵工自动化2024，Vol.43Issue(5)：66-70,5.DOI:10.7690/bgzdh.2024.05.013
破片防护结构对冲击波测试影响的数值分析
Numerical Analysis of Influence of Fragment Protection Structure on Shock Wave Test
郭庆 1王文廉 1郭科科 1江虹颖1
作者信息
- 1. 中北大学仪器科学与动态测试教育部重点实验室,太原 030051
- 折叠
摘要
Abstract
Aiming at the influence of protective structure on shock wave characteristics,numerical simulation of shock wave signal propagation under the condition of protective structure is carried out by using AUTODYN.The 2D-Euler Multi-material algorithm was used to simulate and calculate,and the shock wave pressure curves and characteristic parameters at different locations in the protected area were compared with those in the open environment,and the effects of the distance between the protected structure and the measuring point and the angle α of the protected structure deviating from the propagation direction of the shock wave on the shock wave test were analyzed.The results show that the errors of peak pressure,positive pressure action time and specific impulse are 0.51%,4.36%and 1.91%respectively when the distance between the protective structure and the measuring point is 10 times of the cylinder diameter and the positive protection is achieved(α=0)in one-way protection;In the case of multi-directional protection,the error of peak pressure is the smallest,which is-0.43%,when α=0,and the error of positive pressure action time and specific impulse is even smaller,which is-2.91%and 0.66%,when α=30°.关键词
冲击波测试/防护结构/数值模拟/特征参数Key words
shock wave test/protective structure/numerical simulation/characteristic parameter分类
军事科技引用本文复制引用
郭庆,王文廉,郭科科,江虹颖..破片防护结构对冲击波测试影响的数值分析[J].兵工自动化,2024,43(5):66-70,5.
