0
Research Papers

Vibration and Acoustic Response of an Isotropic Plate in a Thermal Environment

[+] Author and Article Information
P. Jeyaraj, N. Ganesan

Machine Design Section, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600 036, India

Chandramouli Padmanabhan1

Machine Design Section, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600 036, Indiamouli@iitm.ac.in

1

Corresponding author.

J. Vib. Acoust 130(5), 051005 (Aug 13, 2008) (6 pages) doi:10.1115/1.2948387 History: Received April 05, 2007; Revised February 20, 2008; Published August 13, 2008

This paper presents numerical simulation studies on the vibration and acoustic response characteristics of an isotropic rectangular plate in a thermal environment using commercial finite element softwares ANSYS and SYSNOISE . First the critical buckling temperature is obtained, followed by modal and harmonic analyses considering prestress due to the thermal field in the plate, with the critical buckling temperature as a parameter. The vibration response predicted is then used to compute the sound radiation. It is found that the displacement response of the structure increases with an increase in temperature for all boundary conditions. The overall sound radiation of the plate marginally increases with an increase in temperature for all boundary conditions when the temperature approaches the critical buckling temperature although there is a sharp increase in sound power levels.

FIGURES IN THIS ARTICLE
<>
Copyright © 2008 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 11

Sound power level in constant frequency bands for the CCCC plate

Grahic Jump Location
Figure 10

Overall output power level for different boundary conditions

Grahic Jump Location
Figure 9

Mean square velocity for the CCCC plate in a constant band

Grahic Jump Location
Figure 8

Overall mean square velocity for the CCCC plate

Grahic Jump Location
Figure 7

(a) Output sound power level for the CCCC plate. (b) Output sound power level for the CFFC plate.

Grahic Jump Location
Figure 6

Radiation efficiency for the CCCC plate

Grahic Jump Location
Figure 5

(a) Normal velocity at the point of harmonic excitation for the CCCC plate. (b) Normal velocity at the point of harmonic excitation for the CFFC plate.

Grahic Jump Location
Figure 4

Point of excitation for different boundary conditions

Grahic Jump Location
Figure 3

Mode shapes of the CFFC plate under a thermal environment

Grahic Jump Location
Figure 2

A comparison of the sound pressure level at the center of the plate with that of Holmstrom (9)

Grahic Jump Location
Figure 1

A flow chart of the analysis approach

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In