Research On Dynamic Performance Of Magnetorheological Dampers With Different Liquid Channel Structures

Traditional passive suspension can reduce the vibration of the car to a certain extent,but as people more and more high requirement for comfort,passive suspension will not be able to meet the needs of the masses,the magnetorheological damper(MRD)which takes magnetorheological fluid(MRF)as intelligent material,is an ideal part of semi-active suspension due to its advantages of rapid response,low energy consumption and continuously adjustable damping force.Many scholars at home and abroad have conducted a lot of simulation and experimental research on MRD,but the magnetorheological suspension technology is not fully mature,MRD has not been widely used,it needs the scientific research workers continue to further research.Based on this,this paper conducts an analysis and research on the dynamic performance of magnetorheological dampers with different liquid channel structures.The specific research contents include:(1)The structure analysis and magnetic circuit calculation of magnetorheological dampers with single channel,parallel double channel and parallel tiple channel are presented in this paper,and their structure and size parameters are checked and verified,and the magnetorheological dampers with single channel,parallel double channel and parallel triple channel are processed at the same time.(2)Three kinds of magnetorheological damper simulation models of liquid flow channel structure were established by using ANSYS electromagnetic simulation software,and two-dimensional static magnetic field analysis was carried out on them to simulate and analyze the distribution of magnetic induction intensity and magnetic field lines inside the damper.In addition,the damping force calculation models of single channel,double channel and triple channel magnetorheological damper are established respectively.(3)The processed three types of dampers were assembled separately,and the dynamic performance of the three types of dampers were tested by using different excitations imposed by the INSTRON fatigue tensile machine.The test results of the dynamic performance were compared and analyzed,and the reasons for the experimental errors were analyzed.