Simplified damping model of the eddy current damper with a double-annular-plate configuration

Article Construction & Building Technology

Equivalent circuit model of eddy current damping regarding frequency-dependence with test validation

Zhiguo Shi et al.

Summary: The study proposes an equivalent circuit model for simulating the mechanical behavior and frequency-dependent characteristic of eddy current damping, with validations from multi-physics finite element modeling and dynamic testing. The proposed model shows favorable agreement and can accurately simulate the nonlinear behavior of eddy current damping under different excitation scenarios. Experimental observations of a designed eddy current damper can be reproduced with reasonable accuracy and reliability by the proposed equivalent circuit model.

ADVANCES IN STRUCTURAL ENGINEERING (2022)

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Article Acoustics

A new type of damper combining eddy current damping with rack and gear

Yafeng Li et al.

Summary: A new type of damper combining eddy current damping with rack and gear has been proposed to mitigate the seismic response of buildings. The experimental and theoretical results of a prototype show good agreement, indicating a linear and nonlinear relationship between damping force and velocity. By adjusting the thickness of the conductor plate, air gap, and number and location of permanent magnets, the available maximum damping force can be optimized.

JOURNAL OF VIBRATION AND CONTROL (2021)

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Article Automation & Control Systems

A Dual-Sided Hybrid Excitation Eddy Current Damper for Vibration Suppression in Low Damping Linear Motor System

Na Sang et al.

Summary: This article proposes a dual-sided hybrid excitation eddy current damper (ECD) to suppress the vibration of the linear motor during deceleration and stopping stages. The experimental results show that this technology significantly reduces the peak amplitude of position error and settling time, improving work efficiency.

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS (2021)

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Article Construction & Building Technology

Eddy-Current Tuned Mass Dampers for Mitigation of Wind-Induced Response of the Noor III Solar Tower: Design, Installation, and Validation

Min Liu et al.

Summary: The Noor III solar tower in Morocco's Ouarzazate Solar Power Station utilized eddy-current damping tuned mass dampers (TMDs) to reduce wind-induced vibrations. The customized TMD system designed for the tower effectively increased the damping ratio after installation, demonstrating significant mitigation of wind-induced response.

JOURNAL OF STRUCTURAL ENGINEERING (2021)

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Article Acoustics