圆盘式磁流变液变厚度传动性能研究  

Study on the Transmission Characteristic of Disk Type Magnetorheological Fluid with Variable Thickness

作　　者：黄金 周轶 袁发鹏 

机构地区：[1]重庆理工大学机械工程学院,重庆400054

出　　处：《机械传动》2017年第12期26-30,35,共6页Journal of Mechanical Transmission

基　　金：国家自然科学基金(51175532;11602041)

摘　　要：基于磁流变液的流变特性和形状记忆合金弹簧的热驱动特性,提出了一种通过温度场控制的形状记忆合金弹簧驱动的磁流变液变厚度进而改变转矩的新型传动方法。介绍了其工作原理,推导了厚度与形状记忆合金材料、动力、几何等参数之间的关系。基于磁路理论,建立了该传动装置的磁路模型,推导了磁势的计算公式。用ANSYS软件进行了二维磁场有限元仿真,得到4种不同厚度下的磁感应强度分布云图,最后分析了不同厚度下传递转矩的能力。结果表明,磁流变液的厚度越小,所能传递的转矩越大,但磁流变液的厚度存在最小值。Based on the rheological property of magnetorheological fluid （MRF） and thermal drive charac- teristics of shape memory alloy （SMA） spring, a new type of transmission device, which is based on the tem- perature field control of SMA to drive the MRF variable thickness to change the transmission torque is put for- ward. Its working principle is introduced, and the thickness calculation formula about relationship between thickness and SMA material, power, geometry parameters is derived. Based on the theory of magnetic circuit, the magnetic circuit model of the transmission device is established, the formula of magnetic potential is de- duced. Based on the finite element simulation of two - dimensional magnetic field by using ANSYS software, and the distribution cloud of magnetic induction intensity under 4 different thicknesses is obtained, then the a- bility of torque transmission under different thickness is analyzed. The results show that the smaller the thick- ness of MRF, the greater torque can be transmitted, but MRF has the minimum thickness.

关 键 词：形状记忆合金弹簧 变厚度 磁流变液传动 磁路仿真 转矩 

分 类 号：TB34[一般工业技术—材料科学与工程] TH135[机械工程—机械制造及自动化]