Open Access

ARTICLE

Development and Application of a Power Law Constitutive Model for Eddy Current Dampers

Longteng Liang^1,2,3, Zhouquan Feng^2,4,*, Hongyi Zhang^2,4, Zhengqing Chen^2,4, Changzhao Qian^1,3

1 School of Civil Engineering and Architecture, Xiamen University of Technology, Xiamen, 361024, China
2 Hunan Provincial Key Laboratory of Wind and Bridge Engineering, Hunan University, Changsha, 410082, China
3 Fujian Provincial Key Laboratory of Wind Disaster and Engineering, Xiamen University of Technology, Xiamen, 361024, China
4 State Key Laboratory of Bridge Engineering Safety and Resilience, Hunan University, Changsha, 410082, China

* Corresponding Author: Zhouquan Feng. Email:

Computer Modeling in Engineering & Sciences 2024, 138(3), 2403-2419. https://doi.org/10.32604/cmes.2023.031260

Received 26 May 2023; Accepted 18 August 2023; Issue published 15 December 2023

Abstract

Eddy current dampers (ECDs) have emerged as highly desirable solutions for vibration control due to their exceptional damping performance and durability. However, the existing constitutive models present challenges to the widespread implementation of ECD technology, and there is limited availability of finite element analysis (FEA) software capable of accurately modeling the behavior of ECDs. This study addresses these issues by developing a new constitutive model that is both easily understandable and user-friendly for FEA software. By utilizing numerical results obtained from electromagnetic FEA, a novel power law constitutive model is proposed to capture the nonlinear behavior of ECDs. The effectiveness of the power law constitutive model is validated through mechanical property tests and numerical seismic analysis. Furthermore, a detailed description of the application process of the power law constitutive model in ANSYS FEA software is provided. To facilitate the preliminary design of ECDs, an analytical derivation of energy dissipation and parameter optimization for ECDs under harmonic motion is performed. The results demonstrate that the power law constitutive model serves as a viable alternative for conducting dynamic analysis using FEA and optimizing parameters for ECDs.

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Keywords

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