磁気減衰振動現象の評価パラメータ : 第1報, 薄板の磁気減衰挙動の測定

概要

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Evaluation of magnetic damping effect, which is produced by the coupled effect between deforma tion and induced eddy current, is needed for the mechanical design of structures located in a high magnetic field such as magnetic fusion reactor components. The authors have defined the coupling intensity parameter which represents the intensity of electromagnetic and structural coupling effect. This paper describes the method to obtain the coupling intensity parameter from the results of magnetic damping experiment. Since the vibration profile obtained from the experiment includes the damping by air and the structural damping, these damping effects should be removed from the experimental results to obtain the coupling intensity parameter accurately. The dependence of the parameter on external magnetic field and thickness is obtained experimentally for the bending problem of a cantilever plate under various conditions.
社団法人日本機械学会の論文
1999-02-25