Advanced Multilayer Viscoelastic Dampers for Structural Vibration Control
DOI:
https://doi.org/10.65419/albahit.v5i3.158Keywords:
multilayers viscoelastic dampers, frequency-dependent behavior, finite element analysis, structural vibration mitigation, experimental validationAbstract
advanced multilayer viscoelastic (VE) dampers offer a cost-effective solution for reducing vibrations in large scale structures without expensive modifications. Nevertheless, accurate modeling of their frequency-dependent behavior remains a challenge. Since simplified analytical models often fail to predict real-world performance, this paper develops and experimentally validates a validated numerical framework based on Finite Element Analysis (FEA). Based on generalized Maxwell law of frequency-dependent material properties, a two-layer FEA model of VE damper utilizing Sorbothane was built in COMSOL environment. The target VE model tested using a custom hydraulic experimental setup. The FEA predictions were rigorously compared against experiment measurements across a frequency range of 3 - 7 Hz. The result showed good agreement for both damping and stiffness characteristics. Besides, a structural frame case study under wind loading demonstrated the effectiveness of the VE damper highlighting its dual benefit of energy dissipation and structural stiffening. This "stiffening-plus-damping" effect is crucial for resilient infrastructure since it both reduces resonant response and shifts natural frequency away from critical excitation ranges.
In summary, the developed numerical FEA framework effectively captures the complex behavior of multilayer VE dampers, making it a reliable tool for designing high-capacity systems for controlling vibrations in large-scale structures. Future work will explore temperature-dependent behavior to further enhance deployment of these systems in structure vibration control.
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