低频振子设计及其冲击响应试验分析  

Design of a Low Frequency Vibrator and Analysis of its Shock Response Experiment

作　　者：高鹏[1,2] 孟宪松[1] 赵鹏铎[2] 张磊[2] GAO Peng;MENG Xian-song;ZHAO Peng-duo;ZHANG Lei(School of Mechanical Engineering, Shenyang University of Technology, Shenyang 110780, China;Naval Academy of Armament, Beijing 100161, China)

机构地区：[1]沈阳工业大学机械工程学院,沈阳110870 [2]海军装备研究院,北京100161

出　　处：《噪声与振动控制》2016年第4期202-205,共4页Noise and Vibration Control

基　　金：中国博士后科学基金资助项目(2014M562622);航空科学基金资助项目(201404Q5001)

摘　　要：在低频段冲击响应谱的测量中,传统的簧片仪所测谱值精度不高。为了更精确测量水下实船爆炸冲击的低频响应谱,设计一种低频振子结构,通过有限元软件分析该低频振子在不同类型冲击载荷作用下动态响应规律,然后进行了实物试验。试验表明,所设计的低频振子绝对加速度响应与有限元仿真计算结果相一致,而且其冲击载荷的动态响应与载荷的强度有着密切联系,所设计的低频振子对低频段冲击响应谱测量是有效的,同时有关结论也为低频振子结构的进一步优化提供理论依据。In the measurement of shock response spectrum in low frequency range, the precision of traditional reed gage is not sufficiently high. So, a low frequency vibrator is designed so as to measure the shock response spectrum in low frequency range of real ships subjected to underwater explosion. The dynamic response law of the low frequency oscillator under different impulsive loads is analyzed by the finite element simulation and physical testing. It is found that results of the test of the absolute acceleration response of the designed low frequency vibrator is consistent with the results of the simulation calculation, and that its dynamic response to the impulsive load is intimately related to the load intensity. So, the designed low frequency vibrator is effective in the measurement of low frequency impact spectrum. This work provides a theoretical basis for further structure optimization.

关 键 词：振动与波 低频振子 动力学模型 有限元 绝对加速度 

分 类 号：O241.82[理学—计算数学] TH873.4[理学—数学]