Effect of Mesh Size on Structure Vibration and Acoustic Radiation

Abstract:

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.

• Periodical: Applied Mechanics and Materials (Volumes 226-228)
• Pages: 216-220
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.226-228.216
• Online since: November 2012
• Authors: Zhi Yong Xie, Qi Dou Zhou, Xiao Jun Lv, Jia Xi Duan
• Keywords: Acoustic Radiation, BEM, Experimental Study, Finite Element Model (FEM), Mesh Size, Vibroacoustic

References

[1] Z. Han: Structure & Environment Engineering, Vol. 30(2003), No. 3, P. 18 (In Chinese).

[2] Q. Zhou and P. F. Joseph: Journal of Sound and Vibration, Vol. 283(2005), No. 3, p.853.

[3] D. Li, Q. Lu: Analysis of Experiments in Engineering Vibration (Tsinghua University Press, China 2004).

[4] G. Lin, X. Li, Z. Zhang: Journal of Sound and Vibration, Vol. 326(2009), P. 633.