摘要
基于Bingham塑性模型,导出了圆筒式磁流变制动器的制动力矩公式,建立了磁流变制动器的二维轴对称磁场有限元模型。在考虑不产生"磁饱和"现象的情况下,分析了转筒厚度对工作间隙中磁流变液磁通密度的影响。在此基础上,确定了能使磁流变液中的磁通密度达到最大的结构设计方案。结果表明该结构方案既能满足磁流变制动器的制动力矩要求,又能满足磁路设计要求。
Based on the Bingham plastic model, the torque formula of the drum-type magnetorheological brake （MRB） is presented, and its magnetic field finite element model, which is two-dimensional axial symmetry, is established. It is analyzed that the thickness of the tube had an effect on the magnetic flux density of the MRF considered the circumstances without a ＂magnetic saturation＂. The scheme of the MRB structure, which can make the magnetic flux density to maximize in the MRF, is proposed. Results indicate that the structural scheme can meet not only the brake torque requirements of the MRB, but also the magnetic circuit design demands.
出处
《机械设计与研究》
CSCD
北大核心
2008年第6期49-51,共3页
Machine Design And Research
基金
浙江省自然科学基金资助项目(Y107172)
浙江省科技计划重点资助项目(2006C21063)
关键词
磁流变制动器
有限元分析
磁饱和
magnetorheological brake
finite element analysis
magnetic saturation
