A nonlinear constitutive model for soft ferromagnetic rods
In this paper, a nonlinear and coupled model is suggested to describe the constitutive relations for a soft ferromagnetic materials rod subjected to an axial pre-stress and located in an axial magnetic field. The new model uses a Taylor series expansion of independent variables of stress and magnetization to obtain a polynomial relation in terms of elastic Gibbs free energy, and then substitutes appropriate transcendental function for some polynomial terms to achieve a more compact representation based on magnetoelastic coupling mechanism. The numerical simulation exhibits that the predicted magnetostrictive strain curves for various pre-stresses are in good agreement with the experimental data.
Hao-miao Zhou You-he Zhou
Department of Mechanics and Engineering Science, Lanzhou University, Lanzhou 730000, China
国际会议
The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)
上海
英文
347-352
2007-06-11（万方平台首次上网日期，不代表论文的发表时间）