Vibration characteristics of a box-type structure
Lin, Tian Ran & Pan, Jie (2009) Vibration characteristics of a box-type structure. Journal of Vibration and Acoustics, 131(3), (031004)-1-(031004)-9.
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This paper is concerned with the understanding of vibration characteristics of a box-type structure using finite element method as a tool. We found that mode shapes of the box structure can be classified according to their symmetrical properties, which are defined by the relative motion between the six plate panels constituting the box. The infinite number of modes of the box-type structure is divided into six groups. Each group has common features of symmetry and similar coupling mechanism between component panels and distribution of out-of-plane and in-plane components of vibration. Local and net-volume displacements associated with each mode can be correlated to the characteristics of the box as a sound source. Large volume displacement modes resembling the simple sound sources (e.g. monopole, dipole, etc) are identified among the low frequency modes. The distribution of in-plane and out-of-plane (including translational and rotational vibration at the box edges) vibration components in the modes of the box are also investigated to illustrate the energy transmission mechanism between the box panels.
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|Item Type:||Journal Article|
|Keywords:||Vibration, Box structure, Volume displacement, Elementary sound sources|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
Current > Institutes > Institute of Health and Biomedical Innovation
Past > Schools > School of Engineering Systems
|Copyright Owner:||Copyright 2009 American Society of Mechanical Engineering|
|Deposited On:||23 Apr 2009 07:57|
|Last Modified:||01 Mar 2012 00:10|
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