Two theoretical problems in electro–magneto–elastic analysis

摘要: Two fundamental theories are discussed in this paper. In the nonlinear electro–magneto–elastic analysis, different authors give formulas. It means that theory should still be studied. paper, we a review of and extend physical variational principle to material with electromagnetic body couple. For temperature wave, compare inertial entropy Cattaneo–Vernotte’s detail show former is more appropriate. These may interesting need further research.