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http://dx.doi.org/10.5050/KSNVN.2004.14.3.193

Vibration Characteristic Study of Arc Type Shell Using Active Constrained Layer Damping  

고성현 (포항공과대학교 대학원 기계공학과)
박현철 (포항공과대학교 기계공학과)
황운봉 (포항공과대학교 기계공학과)
박철휴 (포항공과대학교 기계공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.14, no.3, 2004 , pp. 193-200 More about this Journal
Abstract
The Active Constrained Layer Damping(ACLD) combines the simplicity and reliability of passive damping with the low weight and high efficiency of active control to attain high damping characteristics. The proposed ACLD treatment consists of a viscoelastic damping which is sandwiched between an active piezoelectric layer and a host structure. In this manner, the smart ACLD consists of a Passive Constrained Layer Damping(PCLD) which is augmented with an active control in response to the structural vibrations. The arc type shell model is introduced to describe the interactions between the vibrating host structure, piezoelectric actuator and viscoelastic damping. The system is modeled by applying ARMAX model and changing a state-space form through the system identification method. An optimum control law for the piezo actuator is obtain by LQR(Linear Quadratic Regulator) method. The performance of the ACLD system is determined and compared with PCLD in order to demonstrate the effectiveness of the ACLD treatment. Also, the actuation capability of a piezo actuator is examined experimentally by varying thickness of viscoelastic material(VEM).
Keywords
Active Constrained Layer Damping; Viscoelastic Material; ARMAX(Autoregressive Moving Average with Exogenous Variables); Optimal Control;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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