浮动冲击平台海上试验爆源定位方法  

Method of positioning an explosion source for a floating shock platform sea trail

作　　者：张文启[1] 姚熊亮[1] 王志凯 赵坤 ZHANG Wenqi;YAO Xiongliang;WANG Zhikai;ZHAO Kun(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China;College of Mechanical and Electrical Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001 [2]哈尔滨工程大学机电工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2021年第11期1566-1572,共7页Journal of Harbin Engineering University

基　　金：黑龙江省自然科学基金项目(E2017026);装备预研领域基金项目(61400020302);国家科技重大专项(2017-V-0002-0051)。

摘　　要：本文提出了一种改进的冲击波零时法,用以对浮动冲击平台海上试验爆源进行定位计算。基于水下爆炸冲击波的基尔克乌特-别泽理论计算冲击波传播特性,测量冲击波零时信号及压力信号,计算爆源与各测点间的相对距离,从而对传统爆源定位方法中冲击波的声学近似假设予以改进。考虑冲击波在壁面产生的反射,建立方程组并求解得到爆源的具体位置。试验表明:在传感器数据良好的情况下,该方法可满足爆源定位的要求,无量纲偏移距离均小于0.047 9;在个别数据测量准确性较差的情况下,也能得到相对准确的定位结果,无量纲偏移距离均小于0.127 5。研究结果有利于浮动冲击平台及实船海上试验爆源定位计算,并可为后续修正数值计算模型提供依据。In this paper, an improved shock wave zero time method is proposed to locate and calculate the explosion source of an offshore test on a floating shock platform. Based on the Kirkwood-Bethe theory of underwater explosive shock waves, the propagation characteristics of the shock wave are calculated, the zero time signal and pressure signal of the shock wave are measured, and the relative distance between the explosion source and each measuring point is calculated so as to improve the acoustic approximation hypothesis of the shock wave in the traditional explosion source location method. Considering the reflection of the shock wave on the wall, equations are established and solved to obtain the specific location of the explosion source. The test shows that this method can meet the requirements of explosion source location with good sensor data, and the dimensionless offset distance is less than 0.047 9. In the case of poor measurement accuracy of the individual data, relatively accurate positioning results can also be obtained, and the dimensionless offset distance is less than 0.127 5. The research results are beneficial to the calculation of the location of an explosion source on a floating impact platform in a real ship offshore test and can provide a basis for the subsequent correction of the numerical model.

关 键 词：冲击波零时法 浮动冲击平台 爆源定位 海上试验 冲击波反射 压力传感器 水下爆炸 基尔克乌特-别泽理论 

分 类 号：O383.1[理学—流体力学]