ABSTRACT
The goal of this paper is to solve the problems of large volume, slow dynamic response and poor intelligent controllability of traditional gait rehabilitation training equipment by using the characteristic that the shear yield strength of magnetorheological fluid changes with the applied magnetic field strength. Based on the extended Bingham model, the main structural parameters of the magnetorheological fluid damper and its output force were simulated and optimized by using scientific computing software, and the three-dimensional modeling of the damper was carried out after the size was determined. On this basis and according to the design and use requirements of the damper, the finite element analysis software was used for force analysis, strength check and topology optimization of the main force components. Finally, a micro magnetorheological fluid damper suitable for wearable rehabilitation training system was designed, which has reference value for the design of lightweight, portable and intelligent rehabilitation training equipment.
Subject(s)
Computer Simulation , Software , Wearable Electronic DevicesABSTRACT
Magnetorheological fluid(MRF) is a sort of newly developed intelligent material.Because of the quick and adjustable magnetorheological effect of MRF,it is widely used in shock absorbers,clutches,polishing devices,hydraulic valves,etc.This paper mainly introduces magnetorheological fluid,magnetorheological effect,the work mode and characteristics of magnetorheological fluid shock absorbers as well as its application prospect in the wounded transport vehicle.
ABSTRACT
Since vibration highly influences the performance of vehicles, the effective improvment of vibration isolation has a great significance for enhancing the economy, balance, stability and reliability of vehicles. Based on the variable viscosity properties of magnetorheological(MR) fluids with the variation of a external magnetic flied resulted from adjustable and controllable electric current, a magnetorheological vibration isolator is developed. Through experiment and application, it is proved that the magnetorheological vibration isolator can highly increase vibration isolation efficiency.