TY  - EJOU
AU  - Liang, Longteng 
AU  - Feng, Zhouquan 
AU  - Zhang, Hongyi 
AU  - Chen, Zhengqing 
AU  - Qian, Changzhao 

TI  - Development and Application of a Power Law Constitutive Model for Eddy Current Dampers
T2  - Computer Modeling in Engineering \& Sciences

PY  - 2024
VL  - 138
IS  - 3
SN  - 1526-1506

AB  - 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.
KW  - Eddy current damper; constitutive model; finite element analysis; vibration control; power law constitutive model

DO  - 10.32604/cmes.2023.031260