Effect of Mesh Size on Structure Vibration and Acoustic Radiation

摘要：

　　The cylinder for experiment has been excited by steady sinusoidal and random white noise excitation forces and the acceleration responses are measured.The frequency response functions of two excitation ways agree well.The reciprocity law and the linearity are certified by exchanging the excitation and measurement spots and increasing input voltage continuously respectively.The influence of mesh size to calculated time and precision of vacuum vibration mean square velocity and underwater vibration mean square velocity and acoustic radiation are investigated.Results show that time consumed mounts with the mesh size gets smaller, and the vibroacoustic results is less influenced at lower frequencies but much more at higher frequencies.

关键词： Mesh size FEM BEM Vibroacoustic Acoustic radiation Experimental study

作者: Zhiyong Xie Qi-dou Zhou Xiaojun Lv Jiaxi Duan

作者单位: College of Naval Architecture and power,Naval Univ.of Engineering,Wuhan 430033,China

会议类型: 国际会议

会议名称: the 2012 International Conference on Vibration, Structural Engineering and Measurement (2012年振动、结构工程与测量国际会议(ICVSEM2012))

会议地点: 上海

会议语种:英文

页码: 216-220

在线出版日期: 2012-10-19（万方平台首次上网日期，不代表论文的发表时间）