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- Title
Wave attenuation of a multi-span continuous beam with variable cross sections.
- Authors
Mao, Xiaochen; Zhang, Liufei; Fan, Xinlei
- Abstract
This paper studies the vibration band-gaps of a non-uniform beam with periodically continuous variable cross sections and hinged supports. The governing equation of the beam is obtained by using spectral element method. The frequency responses of the beam under external excitation are shown. The accuracy and efficiency of the spectral element method are validated. The advantages of the proposed beam are discussed. The influences of the structural and material parameters on the band-gap properties are explored, such as the height curve, the disordered vibration absorbers, and the material attributes. The coupling effects of the local resonance band-gaps and the Bragg scattering band-gaps are explored and can be used to design the band-gap structure. The displacement amplitudes of the beam for different excitation frequencies are shown.
- Subjects
SPECTRAL element method; VIBRATION absorbers; CONSTRUCTION materials; RESONANCE effect; EULER-Bernoulli beam theory
- Publication
Acta Mechanica, 2023, Vol 234, Issue 4, p1451
- ISSN
0001-5970
- Publication type
Article
- DOI
10.1007/s00707-022-03465-3