拡張Preisachモデルを用いた磁気力学的構成式の定式化 : 強磁性体の応力磁化効果

概要

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Magnetic and mechanical rate-type constitutive equations are derived by taking into account of the magnetoelastic couplings. The proposed magnetic constitutive equations can involve the conventional typical magnetic models extended to the stress dependence. From the structure of the constitutive equations, it is shown that the stress magnetization effect can be derived from the stress dependency of the magnetization and the magnetostriction curves. For a typical ferromagnetic material, the Basso-type extended Preisach model is employed in the magnetic constitutive equation and the coefficients of the constitutive equations are identified by the magnetization and the magnetostriction tests of nickel under several stress levels. Simulated stress magnetization effect is found to agree with the experimental result better than the simulated result using the other typical magnetic model, i.e. the extended Jiles model.
社団法人日本機械学会の論文
2003-11-25