Vibration Analysis of a Shell Structure by Finite Element Method
Plate-shell structures,especially cylindrical shells and spherical shells,are widely used in engineering fields,such as aircraft and tanks,missiles,submarines,ships,hydraulic pumps,infusion pipelines and gas pipelines,and so on.These structures are usually in a fluid medium,which are related to the structure fluid-solid coupling and acoustic radiation field.As many experiments show that enclosed air in a thin walled structure,just like the violin,affects some modes of vibration significantly,air coupling between vibrating sides of the structure cannot be neglected.In order to explore the sound pressure distribution of vibrational frequencies,this paper,considering the material anisotropy,analyzes a typical complex shell structure of the violin by finite element method,including acoustic-structure coupling analysis and post-processing,especially sound pressure vibration frequency extraction.Finally,we get the conclusion that the distribution of sound pressure vibration frequency is similar to the normal distribution.
Violin Vibration Finite element method (FEM) Acoustic-structure coupling
Ming Hui Zhao
China Coal Research Institute Shanghai Ltd.1 Tian Yao Qiao Road,Shanghai,China,200030
国际会议
广州
英文
1929-1933
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）