چکیده مقاله
In the present paper, excess eddy currents loss of Terfenol–D is studied and effects of magnetic field frequency, peak of magnetic flux density and diameter of Terfenol D are investigated To provide reliable data for the purpose of the paper, an experimental laboratory is fabricated and used to obtain major and minor hysteresis loops of Terfenol D at different frequencies In theoretical study, an eddy currents model based on non uniform distribution of magnetic flux and nonlinear diffusion of electromagnetic fields is presented Obtained results show that the values of excess losses are generally larger than classical losses and applying just classical model leads to wrong calculation of actual value of eddy currents losses For the results obtained from the model, empirical model with respect to the magnetic field frequency and the peak value of magnetic flux density is achieved which can predict the excess eddy currents losses precisely The model is validated at new conditions and the results point towards possibility to use the obtained empirical relations at the frequencies below 200 Hz and different values of magnetic flux density
کلیدواژهها
نویسندگان
Soheil Talebian
Assistance Professor of Mechanical Engineering, Razi University, Kermanshah, Iran
شیوه ارجاع
Talebian, Soheil,1400,Modeling Excess Eddy Currents Loss of Terfenol-D Based on Non-linear Diffusion of Magnetic Field,18th National Conference and 7th International Conference on Manufacturing Engineering in Iran
ارائهشده در
مجموعه مقالات هجدهمین همایش ملی و هفتمین کنفرانس بین المللی مهندسی ساخت و تولید ایران11 اسفند 1400 · تهران