Research on Effect of the Vibration Transmission Characteristics From the Internal Base Structures to the Cylindrical Shell
In order to research the effect of vibration transmission characteristics of the ring-stiffened cylindrical shell from the internal base structural style and layout location,a ring-stiffened cylindrical shell experimental model with ten equipment support pedestals was designed,including four pedestals located in the cylindrical shell,four pedestals located at the platform structure and two pedestals located at the bulkhead structure.A series of experiments on vibration modal of the cylindrical shell structure and the pedestals have been conducted and the original mechanical admittances of support pedestals have been analyzed.Taking mechanical admittance as evaluation index,the results indicated that the distribution of the mechanical admittance on the cylindrical shell surface is related to the base structural style and shell structural vibration mode in low frequency range.The concept of equivalent mechanical admittance was presented,and the effect of vibration transmission characteristics of ring-stiffened cylindrical shell from the internal base structural style and layout location was analyzed.The experimental results have the reference value on the acoustical design of the base structure in a ring-stiffened cylindrical shell.
ring-stiffened cylindrical shell base structure vibration transmission mechanical admittance modal
Huabing Wen Linbo Liu Hua Shen Zhaowang XIA
Institute of Noise and Vibration,Jiangsu University of Science and Technology Zhenjiang,China
国际会议
南京
英文
1-6
2013-08-20（万方平台首次上网日期，不代表论文的发表时间）