ESTIMATION OF DYNAMIC PARAMATERS FOR VISCOELASTIC MATERIALS BY LONGITUDINAL VIBRATION TESTING USING PULSE METHOD

摘要：

In this paper,two methods based on longitudinal vibration testing of a thin bar are proposed for measuring the dynamic parameters of the viscoelastic materials in a wide frequency region.First,an inverse method by FEM based on resonance measurement is presented,in which the measured response of longitudinal vibration is asymptotically approached by the forward calculated response from the finite element computation,then the dynamic parameters can be obtained.Second,an improved wave propagation measurements based on free end longitudinal vibration signal is described.In which the dynamic parameters in the frequency range of 1kHz to 5kHz are calculated from the vibration velocity ratio between the long bar and the short bar.

关键词： Pulse generation Dynamic parameters Viscoelastic material

作者: Hong HOU Zheng-yu WEI

作者单位: Northwestern Polytechnical University, 710072, P.R. China

会议类型: 国际会议

会议名称: The 2016 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2016全国压电和声波理论及器件技术研讨会)

会议地点: 西安

会议语种:英文

页码: 13-18

在线出版日期: 2016-10-21（万方平台首次上网日期，不代表论文的发表时间）