816 磁界の周期的時間変動を受ける導体円柱の動的電磁熱弾性解析

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In the present article, a theoretical treatment of dynamic behaviors for magnetothermoelastic stresses and deformation is dealt with in a conducting solid circular cylinder subjected to both internal heat generation due to eddy current loss and Lorentz force by cyclic time variation of magnetic field. Assuming that uniform magnetic field whose intensity varies sinusoidally in time acts on the cylinder in the direction parallel to its surface, plane axisymmetrical magnetic field and the associated eddy current in the cylinder due to electromagnetic induction have been formulated based on the theory of quasi-stationary electromagnetic field. Therefore, dynamic behaviors of magnetothermoelastic stresses and deformations in a conducting solid cylinder, which are subjected to both plane axisymmetrical temperature change due to eddy current loss and Lorentz force, have been analyzed under plane strain condition. Comparing numerical results of dynamic behaviors for magnetothermoelastic stresses and deformation in the cylinder with those of quasi-static one, an effect of frequency in cyclic time variation of magnetic field has been investigated.
社団法人日本機械学会の論文
2003-08-05