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Acoustic Radiation From a Laminated Composite Plate Excited by Longitudinal and Transverse Mechanical Drives

[+] Author and Article Information
X. W. Yin1

Wuxi Branch, Jiangsu Institute of Special Equipment Safety Supervision and Inspection, Wuxi, Jiangsu 214174, Chinax.w.yin@163.com

H. F. Cui

 Wuxi Institute of Technology, Wuxi, Jiangsu 214073, China

1

Corresponding author.

J. Appl. Mech 76(4), 044501 (Apr 21, 2009) (5 pages) doi:10.1115/1.3086429 History: Received August 21, 2007; Revised December 09, 2008; Published April 21, 2009

Analytical expressions are derived for the vibration and far-field acoustic radiation from a fluid-loaded laminated composite plate, which is excited by three types of mechanical drives: point, line, and uniformly distributed forces in longitudinal and transverse directions. Through numerical results, it is shown that the lamination schemes of the laminated composite plate play an important role in its far-field acoustic radiation, especially when the plies of the plate are asymmetric with its middle plane. This paper would help better understand the main mechanism of acoustic radiation from laminated composite plates, which has not been adequately addressed in its companion paper (Yin, , 2007, “Acoustic Radiation From a Laminated Composite Plate Reinforced by Doubly Periodic Parallel Stiffeners,” J. Sound Vibrat., 306, pp. 877–889).

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Copyright © 2009 by American Society of Mechanical Engineers
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Figures

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Figure 1

An infinite laminated composite plate with Cartesian coordinate system

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Figure 2

Numerical results for the far-field acoustic radiation from symmetric and antisymmetric laminates (Q1=1.0 N)

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Figure 3

Numerical results for the far-field acoustic radiation from symmetric and antisymmetric laminates (Q3=1.0 N)

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Figure 4

Numerical results for the far-field acoustic radiation from symmetric and antisymmetric laminates (Q1=1.0 N and Q3=1.0 N)

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Figure 5

Numerical results for the far-field acoustic radiation from symmetric and antisymmetric laminates (T1=1.0 N/m)

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Figure 6

Numerical results for the far-field acoustic radiation from symmetric and antisymmetric laminates (T3=1.0 N/m)

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Figure 7

Numerical results for the far-field acoustic radiation from symmetric and antisymmetric laminates (T1=1.0 N/m and T3=1.0 N/m)

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Figure 8

Numerical results for the far-field acoustic radiation from symmetric and antisymmetric laminates (Qv1=1.0 N/m2)

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Figure 9

Numerical results for the far-field acoustic radiation from symmetric and antisymmetric laminates (Qv3=1.0 N/m2)

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Figure 10

Numerical results for the far-field acoustic radiation from symmetric and antisymmetric laminates (Qv1=1.0 N/m2 and Qv3=1.0 N/m2)

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