摘要在战斗部爆炸场的毁伤评估中，随着战斗部装药量的增加，引起的地震波成为一个不容忽视因素，是战斗部威力评定及测试的重要内容，因此有必要对战斗部爆炸场地震波的测试方法进行研究。经过分析爆炸地震波的特点，选择地表振动速度作为考核指标， 研究组建一套由磁电式单向垂直速度振动传感器TCS-V（垂向）和爆破测振仪 TC-4850 等组成的地震波测试系统，设计适用于战斗部爆炸场地震波测试系统的传感器安装方法。为了验证组建测试系统的正确性，进行了测试试验，测出不同位移处地震波的速度。根据测得的速度和地震波本身的特点，设计了相应的MATLAB 处理程序，获得了各测点地震波的最大速度及速度随时间的变化规律，即速度初始阶段变化非常剧烈，属于强迫振动阶段，之后强度逐渐衰减，表现为自由阻尼振动，这和已知的地震波特点相吻合，表明组建的系统能够满足爆炸场地震波的测试要求。本文还用 MATLAB 对信号做快速傅里叶变换，得到了地震波信号主要能量分布的频率范围。42013
毕业论文关键词：爆炸地震效应 测试系统 峰值速度 衰减特性
Title Investigation on Explosion Seismic Wave TestingMethods
Abstract In the damage assessment of warheads exploded,with the increase of the warheads ofcontroll,seismic waves become a factor that cannot allow to ignore,and is theimportant content of warhead power evaluation and testing,so it is necessary to studyof warhead explosion field seismic test method .After analyzing the characteristics ofexplosive seismic wave,we choose the surface vibration velocity as assessmentindicators,forming a set of seismic wave test system which consists of themagnetoelectric one-way vertical speed vibration sensor TCS-V (vertical) and theblasting vibration of TC-4850,and design a sensor installation method which issuitable for the warhead explosion shock wave testing system.In order to validate thecorrectness of the established testing system,the test experiment was carried out,whichmeasures the speed of seismic waves in different displacement.According to thecharacteristics of the measured velocity and seismic wave itself,design thecorresponding MATLAB program ,we obtained the maximum speed of seismic waveof different measuring points and the velocity changing with the time,In the initialstage,the speed dramatic changes,belongs to the forced vibration stage,after thestrength gradually decay,as the free damped vibration,this is consist with thecharacteristic of seismic waves which is known,this shows that the system that formedcan satisfy the requirement of the explosion field seismic tests.This text also useMATLAB to do fast Fourier transform of signal,the main energy distribution range offrequencies of seismic wave signal was got.
Keywords seismic effect of blast feild test system maximum velocityattenuation characteristics
目次
1 引言. 1
1.1 课题研究背景及意义.. 1
1.2.1 大当量弹药爆炸地震波信号测试方法发展现状..1
1.2.2 爆炸场地震波信号采集系统发展现状 2
1.2.3 爆炸场地震波信号处理方法国内外现状.. 3
1.3 论文开展的工作.4
2 战斗部爆炸场地震波和其测试量的选择. 5
2.1 战斗部爆炸场地震波的产生和特点 5
2.2 爆炸场地震波振动强度表征参量. 5
2.3 战斗部爆炸场地震波振动频率表征参量.7
3 战斗部爆炸场地表振动速度测量系统组建 8
3.1 测试系统设计8
3.2 地震波振动速度测试传感器..9
3.2.1 地震波振动速度传感器分类. 9
3.2.2 地震波振动速度传感器的选择.10
3.3 测振仪的选择.14
4 战斗部爆炸场地震波速度信号采集及分析.17
MATLAB爆炸场地震波测试方法研究:http://www.youerw.com/wuli/lunwen_42284.html