基于COMSOL的磁流变液盘式制动器仿真优化与研究

Simulation Optimization and Research of Magnetorheological Fluid Disc Brake Based on COMSOL

采用Bingham流体模型分析了磁流变液盘式制动器的制动力矩,设计出一种外绕线圈的单盘式制动器结构,利用COMSOL软件对该结构进行建模、电磁场仿真、制动力矩计算与结构参数优化。研究表明,制动力矩基本与旋转盘的角速度无关,制动过程中制动器可获得相对稳定的制动力矩;在一定的磁动势下,当旋转盘半径增加时,盘式制动器的制动力矩会逐渐增加;增加导磁外壳的厚度有利于约束磁力线,进而提高制动力矩。

Using Bingham fluid model,the braking torque of the magnetorheological fluid disc brake was studied,and a single disc brake structure with outer winding coil was designed.COMSOL software was used to model the structure,simulate the electromagnetic field,calculate the braking torque and optimize the structural parameters.The research shows that the brake torque has nothing to do with the angular velocity of the shear disc,and the brake can obtain a relatively stable brake torque during the braking process.Under certain magnetomotive force,when the radius of shear disc increases,the braking torque of disc brake will increase gradually.Increasing the thickness of the magnetic-conducting shell is beneficial to restrain the magnetic field line and improve the braking torque.