Research The Mechanical Properties Of Automotive Electromagnetic Eddy Current Damper

With the continuous development of economy and society， people’s living standardshave improved， cars as an indispensible part of consumer goods grudgingly go intopeople’s ordinary life. As for a man， vehicle comfort also put forward higher requirements.Vibration is an important factor that affect vehicle comfort. Shock absorber damps energyso as to reduce or eliminate the shack， which is caused by vibrating itself and the roadexcitation. The damping character of shock absorber， which is featured regularly throughthe resistance-displacement curves and resistance-speed curve， and it is the maincharacter that affect the performance of shock absorber. The production and design of shockabsorber in our country are still in the imitation stage， few companies can independentlydesign and manufacture dampers with high quality， a large number of companies are stillrelying on foreign technologies and their standards. The test of resistance character ofshock absorber is completed through the traditional bench test. It is really close to the actualworking condition，but this process takes a lot of time，manpower and material resources.Improving design ability of shock absorber and reducing the cost of test are the mission ofmy paper.This topic studies the electromagnetic damper， which is the field of preface of shockabsorber research，and differs from the traditional hydraulic pressure，air shock absorbers，the methods for the analysis of electromagnetic damping character are different fromtraditional analysis methods. Relying on the powerful computing power and simulationmodule of software Matlab，electromagnetic damper resistance character can be studied byestablishing precious physical models. Aiming at calculation model of electromagneticdamper， it can be programmed and caculated in Matlab software environment also canapplied to electromagnetic finite element analysis in software Ansoft， computermagnetic field distribution and the size of the damping force， It could be more intuitive tocompare results. Through a series of comparisions of the results， it can be verified that theresults and experiment of the simulation system and the results of finite element analysishave reached a higher precision， and could meet the needs of the enterprise engineering.Moreover this analysis process forms a simple and clear secondary development onsimulation system through editing the module in GUI of Matlab that guides the design andmanufacture in factories.