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Article

Comparison for the Effect of Different Attachment of Point Masses on Vibroacoustic Behavior of Parabolic Tapered Annular Circular Plate

1
Department of Mechanical Engineering, Indian Institute of Technology (ISM), Dhanbad 826004, India
2
Department of Mechanical Engineering, Bennett University, Greater Noida 201310, India
3
Department of Mechanical Engineering, Tennessee Tech University, Cookeville, TN38505, USA
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(4), 745; https://doi.org/10.3390/app9040745
Received: 19 November 2018 / Revised: 5 January 2019 / Accepted: 14 January 2019 / Published: 20 February 2019
(This article belongs to the Special Issue Modelling, Simulation and Data Analysis in Acoustical Problems)
In this paper, a comparison for the effect of different arrangement of point masses on vibroacoustic behavior of parabolic tapered annular circular plate with different taper ratios are analyzed by keeping the total mass of the plate plus point masses constant. Three different arrangement of thickness variation are considered. The mathematical tool FEM using ANSYS is used to determine the vibration characteristic and both FEM and Rayleigh integral is used to determine the acoustic behavior of the plate. Further, Case II plate (parabolic decreasing increasing thickness variation) for all combination of point masses is found to have reduction in natural frequency parameter in comparison to other cases of parabolic tapered plate. In terms of acoustic behavior, sound power levels of different cases of plate with different point mass combination are observed. It is observed that the Case II plate with two point masses combination shows the highest sound power and the Case III plate for all cases of point mass combination is least prone to acoustic behavior. Furthermore, It is observed that at low forcing frequency average radiation efficiency of parabolic tapered plate for different arrangement of point masses is almost same, but at high forcing frequency average radiation increases for higher taper ratio. Finally, a brief discussion of peak sound power reduction and actuation for different arrangement of point masses with different taper ratios are provided. View Full-Text
Keywords: thick annular circular plate; finite element modeling; Rayleigh integral; point mass; taper ratio; parabolic thickness variation thick annular circular plate; finite element modeling; Rayleigh integral; point mass; taper ratio; parabolic thickness variation
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MDPI and ACS Style

Chatterjee, A.; Ranjan, V.; Azam, M.S.; Rao, M. Comparison for the Effect of Different Attachment of Point Masses on Vibroacoustic Behavior of Parabolic Tapered Annular Circular Plate. Appl. Sci. 2019, 9, 745. https://doi.org/10.3390/app9040745

AMA Style

Chatterjee A, Ranjan V, Azam MS, Rao M. Comparison for the Effect of Different Attachment of Point Masses on Vibroacoustic Behavior of Parabolic Tapered Annular Circular Plate. Applied Sciences. 2019; 9(4):745. https://doi.org/10.3390/app9040745

Chicago/Turabian Style

Chatterjee, Abhijeet, Vinayak Ranjan, Mohammad Sikandar Azam, and Mohan Rao. 2019. "Comparison for the Effect of Different Attachment of Point Masses on Vibroacoustic Behavior of Parabolic Tapered Annular Circular Plate" Applied Sciences 9, no. 4: 745. https://doi.org/10.3390/app9040745

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