膛压测试系统耗散型传压管道动态响应方法

摘要

针对目前枪膛膛压测试研究中,很难利用理论方法求出压力大小,同时安装传感器时不能保证其敏感部位与被测压力介质之间是直接接触等问题,提出了膛压测试系统耗散型传压管道动态响应方法.该方法通过建立的耗散型传压管道数学模型对传压管道的长度、直径进行仿真研究,分析了传压管道的几何参数对管道固有频率的影响.当直径不变时,长度越长传压管道的固有频率越小;当长度不变时,直径对传压管道的固有频率影响不大,并且通过选择合适的直径和长度对其进行实验模拟.仿真试验结果表明,通过试验得出的实测值与理论值相符,所设计的传压管道满足实际使用要求,没有产生信号的失真,能真实传递膛压的动态特性.%In the study of gun barrel bore pressure test ,it is difficult to using the theoretical method to solve the pressure,and the installation of sensors at the same time can not guarantee the measured pressure sensitive areas with medium directly contact.A dissipation type method of dynamic response for chamber pipeline pres-sure test system was put forward.The method,by establishing a mathematical model of pressure dissipation type of the pipe length,diameter of the pipeline to transfer pressure simulation research,analyzed the transmit-ting pressure pipe geometry parameters of the impact on the natural frequency of the pipeline.When the same diameter,length of the natural frequency of the long ball pressure pipeline was smaller.Simulation results showed that the measuring result was consistent with the theoretical value,the design of pressure pipe met the demand of practical use,which could deliver real dynamic characteristics of bore pressure.