27 March 2012 Optimal vibration control of a rotating plate with self-sensing active constrained layer damping
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Abstract
This paper proposes a finite element model for optimally controlled constrained layer damped (CLD) rotating plate with self-sensing technique and frequency-dependent material property in both the time and frequency domain. Constrained layer damping with viscoelastic material can effectively reduce the vibration in rotating structures. However, most existing research models use complex modulus approach to model viscoelastic material, and an additional iterative approach which is only available in frequency domain has to be used to include the material's frequency dependency. It is meaningful to model the viscoelastic damping layer in rotating part by using the anelastic displacement fields (ADF) in order to include the frequency dependency in both the time and frequency domain. Also, unlike previous ones, this finite element model treats all three layers as having the both shear and extension strains, so all types of damping are taken into account. Thus, in this work, a single layer finite element is adopted to model a three-layer active constrained layer damped rotating plate in which the constraining layer is made of piezoelectric material to work as both the self-sensing sensor and actuator under an linear quadratic regulation (LQR) controller. After being compared with verified data, this newly proposed finite element model is validated and could be used for future research.
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Zhengchao Xie, Zhengchao Xie, Pak Kin Wong, Pak Kin Wong, Kin Heng Lo, Kin Heng Lo, } "Optimal vibration control of a rotating plate with self-sensing active constrained layer damping", Proc. SPIE 8341, Active and Passive Smart Structures and Integrated Systems 2012, 83412M (27 March 2012); doi: 10.1117/12.911970; https://doi.org/10.1117/12.911970
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