摘要
针对当前减振结构刚度阻尼不可调的问题,探索了一种适用于大载荷飞机、汽车的挤压型磁流变弹性体减振单元。通过对磁流变弹性体进行模态分析,确定添加缓冲气囊结构避免硬冲击;进一步对减振单元各部分材料进行选型,并通过理论计算确定线圈的电流和匝数。对减振单元整体结构进行磁路分析和仿真优化,结果表明,磁路清晰,结构设计合理;针对铁芯边缘尖角处磁场集中现象,分析并选取最优圆角为7 mm。最后通过分析电流值、气隙大小与磁流变弹性体磁感应强度之间关系,选取最优空气间隙为1 mm。
Aiming at the problems of unadjustable damping of vibration absorber structure and high requirement of using magnetorheological fluid vibration absorber technology,an extruded magnetorheological elastomer vibration absorber unit is studied for large load aircraft and automobile vibration absorber structure.Based on the modal analysis of magnetorheological elastomer,the cushioning air bag structure is adopted to avoid the shock during vibration process.Furthermore,the structural materials of each part of the vibration absorption unit are selected,and the current and turns of the coil are calculated theoretically.Then the magnetic circuit analysis and simulation optimization of the whole structure for the vibration absorption unit are carried out,which verified the rationality of the structure.The magnetic field concentration at the sharp corner of the edge for the core was simulated and analyzed,and the optimum round corner was selected as 7mm.By analyzing the relationship among current value and air gap size and magnetic induction intensity of magnetorheological elastomer,the optimum air gap is 1 mm.
作者
王磊
李文慧
郑鹏程
李长河
WANG Lei;LI Wenhui;ZHENG Pengcheng;LI Changhe(VOSS Automotive Components(Jinan)Co.,Ltd.,Jinan 250000,CHN;Qingdao University of Technology,Qingdao 266000,CHN)
出处
《制造技术与机床》
北大核心
2020年第6期77-82,共6页
Manufacturing Technology & Machine Tool
基金
国家自然科学基金(51575290)。
关键词
磁流变弹性体
挤压模式
减振单元
磁路分析
仿真优化
magnetorheological elastomer
extrusion mode
vibration reduction unit
electromagnetic circuit analysis
simulation optimization
