电容式高膛压测试仪的动态特性分析  

Dynamic Characteristic Analysis of Capacitive High Bore Pressure Tester

作　　者：李新娥[1,2] 祖静[1,2] 徐鹏[1,2] 

机构地区：[1]仪器科学与动态测试教育部重点实验室,山西太原030051 [2]中北大学,山西太原030051

出　　处：《高压物理学报》2014年第1期108-112,共5页Chinese Journal of High Pressure Physics

摘　　要：由于在压力的激励下新型电容式高膛压测试仪壳体产生的振动特性将影响测试仪的动态特性,因此着重研究了测试仪壳体的动力学特性,建立了壳体受外压作用时的动力学模型。理论计算表明,壳体径向振动的一阶振动频率在75kHz以上,而火炮膛压的频谱在5kHz以下,说明壳体振动对膛压测试精度的影响可以忽略。According to the dynamic characteristics of a new capacitive high bore pressure tester,which is decided by the vibration characteristics of the pressure tester shell subjected to pressure,the dynam ic model of the tester shell under external pressure was established,and the dynamic properties of the tester shell were studied. The calculation results show that the first vibration frequency of shell radial vibration is above 75 kHz,and the frequency spectrum of the bore pressure is below 5 kHz. Conse-quently,the influence of shell vibration on the test precision of bore pressure can be ignored.

关 键 词：压力 动力学特性 膛压测量 

分 类 号：O521.3[理学—高压高温物理] TH823[理学—物理]