Journal ArticleDOI
A comparison of active, passive and hybrid damping in structural design
Duane E. Veley,S. S. Rao +1 more
TLDR
In this paper, a patch placement process is developed which allows damping treatment to move on the structure and to distort its shape so as to improve the damping characteristics of the design.Abstract:
The QUAD4 element found in ASTROS is modified to include piezoelectric layers and a viscoelastic layer. These features are developed and combined to allow for active damping using piezoelectrics, passive damping using constrained layer damping (CLD) and hybrid damping in the form of active constrained layer damping (ACLD). These features are implemented in the QUAD4 element as additional layers in the composite layup definition. The development of these features are presented and the integrity of the implementation is validated by comparing with results found in the literature. A patch placement process is developed which allows the damping treatment to move on the structure and to distort its shape so as to improve the damping characteristics of the design. The structure and damping treatment are simultaneously designed for minimum weight with constraints on the frequency and damping ratio. Both beam and plate structures are used to illustrate this concept. A proportional-derivative controller is used for the active control of the beam and the linear quadratic regulator (LQR) is used to design the active controller for the plates.read more
Citations
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Journal ArticleDOI
Advances in piezoelectric finite element modeling of adaptive structural elements: a survey
TL;DR: In this paper, the advances and trends in the formulations and applications of the finite element modeling of adaptive structural elements are surveyed and discussed in a first attempt to survey and discuss the advances.
Dynamics of viscoelastic structures: a time-domain finite element formulation
TL;DR: In this paper, the authors used the canonical M, K form of the undamped motion equations to model viscoelastic damping and used finite element analysis to model the damping factors.
Journal ArticleDOI
Hybrid Active-Passive Damping Treatments Using Viscoelastic and Piezoelectric Materials: Review and Assessment
TL;DR: In this article, a review of the open literature concerning geometric configurations, modeling approaches and control algorithms for hybrid active (piezoelectric)-passive (viscoelastic) damping treatments of beams is provided.
Journal ArticleDOI
Active vibration control of an elastic plate using multiple piezoelectric sensors and actuators
TL;DR: Different H2 control laws have been designed and compared by simulation, in order to evaluate the performance obtained using different combinations of sensors and actuators together with models taking into account an increasing number of structural eigenmodes.
Journal ArticleDOI
Advances in Hybrid Active-Passive Vibration and Noise Control Via Piezoelectric and Viscoelastic Constrained Layer Treatments:
TL;DR: In this article, a survey of hybrid active-passive vibration control is presented, illustrated with figures and tables for helpful use by resea cational experts and used for comparison.
References
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Journal ArticleDOI
Fractional calculus - A different approach to the analysis of viscoelastically damped structures
Ronald L. Bagley,Peter J. Torvik +1 more
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A non-conforming element for stress analysis
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Horn-Sen Tzou,C.I. Tseng +1 more
TL;DR: In this paper, a new structure (shell or plate) containing an integrated distributed piezoelectric sensor and actuator is proposed, where the distributed sensing layer monitors the structural oscillation due to the direct PDE and the distributed actuator layer suppresses the oscillation via the converse PDE.
Journal ArticleDOI
Finite element analysis of composite structures containing distributed piezoceramic sensors and actuators
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Journal ArticleDOI
Modeling of linear viscoelastic space structures
D. J. McTavish,P. C. Hughes +1 more
TL;DR: The GHM method as mentioned in this paper provides viscoelastic finite elements derived from the commonly used elastic finite elements, which are used directly and conveniently in second-order structural models jut like their elastic counterparts.
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