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Article

Natural Frequency Tuning Using Structural Patches

[+] Author and Article Information
P. W. Wang, C. C. Cheng

Department of Mechanical Engineering, National Chung Cheng University, Chia-Yi, 621 Taiwan, R.O.C. e-mail: imeccc@ccu.edu.tw

J. Vib. Acoust 127(1), 28-35 (Mar 21, 2005) (8 pages) doi:10.1115/1.1855926 History: Received January 13, 2003; Revised March 16, 2004; Online March 21, 2005
Copyright © 2005 by ASME
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References

Lamancusa,  J. S., 1992, “Numerical Optimization Techniques for Structural-Acoustic Design of Rectangular Panels,” Comput. Struct., 48(4), pp. 661–675.
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Cheng,  C. C., and Wang,  P. W.,2001 “Applications of the Impedance Method on Multiple Piezoelectric Actuators Driven Structures,” ASME J. Vibr. Acoust., 123(2), pp. 262–268.
Bishop, R. E. D., and Johnson, D. C., 1979, The Mechanics of Vibration, Cambridge University Press, Cambridge, UK, p. 17.
Rao, S. S., 1995, Mechanical Vibration, 3rd ed., Addison–Wesley, New York, p. 527.

Figures

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Geometry of a beam boned with multiple structural patches
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(a) Geometry of the structural patch subjected to longitudinal forces and (b) Equivalent model of (a)
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Geometry of a beam subjected to two concentrated forces
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(a) Segment n of a beam subjected to a pair of stretching forces and (b) An equivalent model of (a)
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Equivalent model of Fig. 1
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Experiment setup for impact testing
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Frequency response of beam before and after attaching structural patches
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Frequency response of beam before and after attaching structural patches
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Graphs of det E6.68 Hz and det E50.55 Hz
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Frequency response of beam before and after attaching structural patches

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