Finite element modeling and vibration control of composite beams with partially covered active constrained layer damping

Zhicheng  Huang; Yang  Li; Yang  Cheng; Xingguo  Wang

doi:10.59400/sv1765

Finite element modeling and vibration control of composite beams with partially covered active constrained layer damping

Zhicheng Huang College of Mechanical and Electronic Engineering, Jingdezhen Ceramic University, Jingdezhen 333001, China
Yang Li College of Mechanical and Electronic Engineering, Jingdezhen Ceramic University, Jingdezhen 333001, China
Yang Cheng College of Mechanical and Electronic Engineering, Jingdezhen Ceramic University, Jingdezhen 333001, China
Xingguo Wang College of Mechanical and Electronic Engineering, Jingdezhen Ceramic University, Jingdezhen 333001, China

Article ID: 1765

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DOI: https://doi.org/10.59400/sv1765

Keywords: active vibration control; finite element method; viscoelastic materials; partially covered Active Constrained Layer Damping (ACLD); dynamic condensation; sandwich beams

Abstract

This paper analyzes the active vibration control of sandwich beams using Active Constrained Layer Damping (ACLD). The finite element model of the viscoelastic sandwich beam combines finite element method with the Golla Hughes McTavish (GHM) model, using a 2-node 8 degrees freedom element. The finite element model is validated by the first four natural frequencies of the model in the literature, and the governing equations of sandwich beams are generated based on the Hamiltonian principle. The physical space dynamic condensation technique and state space complex mode decoupling method are employed to reduce the order of the structural model. This is necessary because free degree of the finite element model is too high to directly control the structure’s vibration. It shows that the fundamental physical characteristics of the structure may remain largely unchanged while the physical and state spaces are jointly reduced. We investigated how the positions and coverages of ACLD patches impact on the active control, vibration damping of viscoelastic sandwich beams.

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Published

2024-11-15

How to Cite

Huang, Z., Li, Y., Cheng, Y., & Wang , X. (2024). Finite element modeling and vibration control of composite beams with partially covered active constrained layer damping. Sound & Vibration, 59(1), 1765. https://doi.org/10.59400/sv1765

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