TY - GEN
T1 - Analysis of low frequency radiation characteristics of a finite cylindrical shell based on vibration and radiation modes
AU - Ding, Shaohu
AU - Chen, Kean
AU - Ma, Xiyue
PY - 2014
Y1 - 2014
N2 - By means of the modal expansion approach, the coupled vibration and sound wave equation for a finite cylindrical shell is solved. The expressions of the radiated sound power and the radial squared velocity are investigated. By use of the solution of the equation, the contribution of the low order vibration modes to the radial squared velocity and the radiated sound power is discussed in different fluids. Then, the sound radiation for the finite cylindrical shells is investigated based on sound radiation modes at low frequencies in different fluids. The results show that more vibration modes contribute to the sound power of the finite cylindrical shells in air, so more sound radiation modes are required to calculate the sound power. However, in water, the influence of the fluid-structure coupling on the radial squared velocity of the shells is very remarkable, the performance of the sound power radiated from the finite cylindrical shells is decreased with the increase of the circumferential vibration modes, and only first several sound radiation modes are required to accurately calculate the sound power.
AB - By means of the modal expansion approach, the coupled vibration and sound wave equation for a finite cylindrical shell is solved. The expressions of the radiated sound power and the radial squared velocity are investigated. By use of the solution of the equation, the contribution of the low order vibration modes to the radial squared velocity and the radiated sound power is discussed in different fluids. Then, the sound radiation for the finite cylindrical shells is investigated based on sound radiation modes at low frequencies in different fluids. The results show that more vibration modes contribute to the sound power of the finite cylindrical shells in air, so more sound radiation modes are required to calculate the sound power. However, in water, the influence of the fluid-structure coupling on the radial squared velocity of the shells is very remarkable, the performance of the sound power radiated from the finite cylindrical shells is decreased with the increase of the circumferential vibration modes, and only first several sound radiation modes are required to accurately calculate the sound power.
UR - https://www.scopus.com/pages/publications/84922663911
M3 - 会议稿件
AN - SCOPUS:84922663911
T3 - 21st International Congress on Sound and Vibration 2014, ICSV 2014
SP - 531
EP - 537
BT - 21st International Congress on Sound and Vibration 2014, ICSV 2014
PB - International Institute of Acoustics and Vibrations
T2 - 21st International Congress on Sound and Vibration 2014, ICSV 2014
Y2 - 13 July 2014 through 17 July 2014
ER -