Influence of sensor installation tilt angle on explosion shock wave pressure test

IF 1.3 4区计算机科学 Q4 AUTOMATION & CONTROL SYSTEMS

Measurement & Control Pub Date : 2023-09-21 DOI:10.1177/00202940231189506

Liangquan Wang, Deren Kong

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引用次数: 0

Abstract

The surface reflection pressure sensor installation flatness will directly lead to the change of the explosion shock wave pressure propagation and distribution law, affecting the test results accuracy, and the test data cannot accurately evaluate the ammunition explosion damage power. In this study, the numerical simulation model of the explosion shock wave pressure propagation and distribution law was established by using the explosive mechanics simulation software, and the pressure distribution law was studied when the sensors installation angles were 0°, 4°, 8°, 12°, −4°, −8°, and −12° respectively. Combined with analysis of the pressure peak value and the pressure evolution nephogram at different measuring points, it is clarified that the positive tilt angle of the sensor installation has an enhancing effect on the pressure peak, while the negative tilt angle has a attenuation effect on the pressure peak. Based on the calculation function formula of the surface reflected pressure peak value in the national defense engineering design code, the surface reflected pressure peak value correction function formula is established by introducing the sensor installation angle correction effect. This study results provide a theoretical basis for the design of ammunition explosion shock wave pressure engineering test scheme and the test data validity verification.

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传感器安装倾角对爆炸冲击波压力试验的影响

表面反射压力传感器的安装平整度会直接导致爆炸冲击波压力传播分布规律的改变，影响试验结果的准确性，且试验数据不能准确评价弹药的爆炸毁伤威力。本研究利用爆炸力学仿真软件建立了爆炸冲击波压力传播和分布规律的数值模拟模型，研究了传感器安装角度分别为0°、4°、8°、12°、- 4°、- 8°和- 12°时的压力分布规律。结合对不同测点压力峰值和压力演变云图的分析，明确了传感器安装的正倾角对压力峰值有增强作用，而负倾角对压力峰值有衰减作用。在国防工程设计规范中地表反射压力峰值计算函数公式的基础上，通过引入传感器安装角修正效应，建立地表反射压力峰值修正函数公式。研究结果为弹药爆炸冲击波压力工程试验方案的设计和试验数据的有效性验证提供了理论依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Measurement & Control 工程技术-仪器仪表

自引率

10.00%

发文量

164

审稿时长

>12 weeks

期刊介绍： Measurement and Control publishes peer-reviewed practical and technical research and news pieces from both the science and engineering industry and academia. Whilst focusing more broadly on topics of relevance for practitioners in instrumentation and control, the journal also includes updates on both product and business announcements and information on technical advances.