Experimental Study on Vibrational Transmission Characteristics of a Ring-stiffened Cylindrical Shell Model
A ring-stiffened cylindrical shell of experimental model with four equipment support pedestals was designed.The effect of vibration transmission characteristics of the ring-stiffened cylindrical shell by the internal base structural style and layout position was researched.The original mechanical admittances of support pedestals were analyzed.Taking mechanical vibration velocity mobility as evaluation index, the vibration transmission characteristics from pedestals to the surface of ring-stiffened cylindrical shell have been experimentally studied, the mechanical admittance distribution pattern of the cylindrical shell surface has been indicated.The difference of mechanical admittances at different positions is large at low frequencies, which is influenced by the mode shape of vibration of the shell structure.However, the difference of mechanical admittances of different positions is little at high frequencies, and the vibration transmission characteristics from pedestals to cylindrical shell can be indicated by the concept of spatial equivalent mechanical mobility.
Ring-stiffened Cylindrical shell Base structure Vibration transmission characteristics Velocity mobility Modal
Huabing Wen Yanyan Zuo Zilong Peng Hua Shen
Institute of Noise and Vibration,Jiangsu University,Zhenjiang 212013,China;Institute of Noise and Vi Institute of Noise and Vibration,Jiangsu University,Zhenjiang 212013,China Institute of Noise and Vibration,Jiangsu University of Science and Technology,Zhenjiang 212003,China
国际会议
上海
英文
285-289
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）