The vibration control of a sandwich beam with supported mass subjected to random support motion excitations can be performed using magnetorheological visco-elastomer core with adjustable dynamic properties. The periodic distributions of geometrical and physical parameters of the sandwich beam can improve its vibration response characteristics. To further improve characteristics or reduce responses, the quasi-periodic sandwich beam with supported mass under random excitations is studied. The facial layer thickness and core layer modulus of the sandwich beam are considered as quasi-periodic distributions. The partial differential equations for the horizontal and vertical coupling motions of the sandwich beam are derived and converted into ordinary differential equations for multi-degrees-of-freedom (DOFs) vibration. The expressions of frequency response and response spectral densities of the sandwich beam are obtained. Numerical results are given to illustrate the greatly improvable vibration response characteristics of the sandwich beam and the outstanding relative reduction localization of antiresonant responses. The proposed quasi-periodic distribution and analysis method can be used for the vibration control design of sandwich beams subjected to random excitations.
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October 2018
Research-Article
Vibration Response Characteristics of Quasi-Periodic Sandwich Beam With Magnetorheological Visco-Elastomer Core Under Random Support Excitations
Z. G. Ying,
Z. G. Ying
Department of Mechanics,
School of Aeronautics and Astronautics,
Zhejiang University,
Hangzhou 310027, China
School of Aeronautics and Astronautics,
Zhejiang University,
Hangzhou 310027, China
Search for other works by this author on:
Y. Q. Ni,
Y. Q. Ni
Department of Civil and
Environmental Engineering,
The Hong Kong Polytechnic University,
Kowloon, Hong Kong
Environmental Engineering,
The Hong Kong Polytechnic University,
Kowloon, Hong Kong
Search for other works by this author on:
R. H. Huan
R. H. Huan
Department of Mechanics,
School of Aeronautics and Astronautics,
Zhejiang University,
Hangzhou 310027, China
e-mail: rhhuan@zju.edu.cn
School of Aeronautics and Astronautics,
Zhejiang University,
Hangzhou 310027, China
e-mail: rhhuan@zju.edu.cn
Search for other works by this author on:
Z. G. Ying
Department of Mechanics,
School of Aeronautics and Astronautics,
Zhejiang University,
Hangzhou 310027, China
School of Aeronautics and Astronautics,
Zhejiang University,
Hangzhou 310027, China
Y. Q. Ni
Department of Civil and
Environmental Engineering,
The Hong Kong Polytechnic University,
Kowloon, Hong Kong
Environmental Engineering,
The Hong Kong Polytechnic University,
Kowloon, Hong Kong
R. H. Huan
Department of Mechanics,
School of Aeronautics and Astronautics,
Zhejiang University,
Hangzhou 310027, China
e-mail: rhhuan@zju.edu.cn
School of Aeronautics and Astronautics,
Zhejiang University,
Hangzhou 310027, China
e-mail: rhhuan@zju.edu.cn
1Corresponding author.
Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received July 30, 2017; final manuscript received March 13, 2018; published online May 4, 2018. Assoc. Editor: Mahmoud Hussein.
J. Vib. Acoust. Oct 2018, 140(5): 051017 (11 pages)
Published Online: May 4, 2018
Article history
Received:
July 30, 2017
Revised:
March 13, 2018
Citation
Ying, Z. G., Ni, Y. Q., and Huan, R. H. (May 4, 2018). "Vibration Response Characteristics of Quasi-Periodic Sandwich Beam With Magnetorheological Visco-Elastomer Core Under Random Support Excitations." ASME. J. Vib. Acoust. October 2018; 140(5): 051017. https://doi.org/10.1115/1.4039726
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