Optimum Design and Control of Active Constrained Layer Damping
- 1 June 1995
- journal article
- Published by ASME International in Journal of Vibration and Acoustics
- Vol. 117 (B) , 135-144
- https://doi.org/10.1115/1.2838655
Abstract
Conventional Passive Constrained Layer Damping (PCLD) treatments with viscoelastic cores are provided with built-in sensing and actuation capabilities to actively control and enhance their vibration damping characteristics. The design parameters and control gains of the resulting Active Constrained Layer Damping (ACLD) treatments are optimally selected, in this paper, for fully-treated beams using rational design procedures. The optimal thickness and shear modulus of the passive visco-elastic core are determined first to maximize the modal damping ratios and minimize the total weight of the damping treatment. The control gains of the ACLD are then selected using optimal control theory to minimize a weighted sum of the vibrational and control energies. The theoretical performance of beams treated with the optimally selected ACLD treatment is determined at different excitation frequencies and operating temperatures. Comparisons are made with the performance of beams treated with optimal PCLD treatments and untreated beams which are controlled only by conventional Active Controllers (AC). The results obtained emphasize the potential of the optimally designed ACLD as an effective means for providing broad-band attenuation capabilities over wide range or operating temperatures as compared to PCLD treatments.Keywords
This publication has 18 references indexed in Scilit:
- Vibration control of rotating beams with active constrained layer dampingSmart Materials and Structures, 2001
- Optimal vibration control with modal positive position feedbackOptimal Control Applications and Methods, 1996
- Performance characteristics of active constrained-layer dampingPublished by SPIE-Intl Soc Optical Eng ,1994
- Initial studies into the use of active constrained-layer damping for controlling resonant vibrationPublished by SPIE-Intl Soc Optical Eng ,1994
- ACTIVE CONSTRAINED LAYER VISCOELASTIC DAMPINGPublished by American Institute of Aeronautics and Astronautics (AIAA) ,1993
- Optimization of constrained viscoelastic damping treatments for passive vibration controlPublished by American Institute of Aeronautics and Astronautics (AIAA) ,1992
- Use of piezoelectric actuators as elements of intelligent structuresAIAA Journal, 1987
- Optimal sandwich beam design for maximum viscoelastic dampingInternational Journal of Solids and Structures, 1987
- Distributed piezoelectric-polymer active vibration control of a cantilever beamJournal of Guidance, Control, and Dynamics, 1985
- Optimization of linear systems of constrained configuration†International Journal of Control, 1970