The Structure Design And Experimental Analysis Of Self-energized Automobile Shock Absorber

With the development of transportation,The ride comfort of the car is more emphasized by passengers.As the core of automotive suspension parts,shock absorber’s main role is the attenuation the vibration caused by road impact.Thus,the design and manufacture of shock absorber is a key point in the design of automobile.As a branch of intelligent vehicle,electric vehicle has broad application prospect.However,the problem of energy consumption restricts its development,so it is necessary to consider the problem of energy.The paper presented a structure design of automobile vibration damper based on self-energized.By using the piezoelectric conversion characteristics,the vibration of the absorber can capture the energy in the course of the car,the energy can be fed back to the electrorheological elastomer dampern The utility model can adjust the damping performance according to the specific driving conditions and improve the riding comfort.Based on this,the main research work of this paper as follows:the shock absorber has good damping performance at these three conditions;1、The paper summarizes the research status of piezoelectric energy harvesting devices,Development of electrorheological materials and Research progress of Electrorheological elastomer materials.And The article simply introduces the electrorheological damper and the energy related research of shock absorber.2、Two kinds of piezoelectric energy harvesting devices are designed that can be integrated on the automobile shock absorber.The corresponding mathematical model is established to simulate the device.The results show that the two kinds of energy harvesting devices can capture and output different voltage signals according to different driving conditions.The piezoelectric energy harvesting device based on permanent magnet is selected to carry out the relevant experimental verification.The experimental results show that the energy can be captured from the vibration of the shock absorber and the simulation results agree well with the simulation results.3、The paper refers to the relevant literature and the research of other researchers and the electrorheological elastomer material was prepared.The relationship between the force and the displacement of the elastic body under different electric fields is obtained by using a universal testing machine.4、The paper designed and developed the self-energized automobile shock absorber model.The experiments were carried out under the three conditions of electric field,the electric field of the piezoelectric energy harvesting device and the 1000V stable electric field.The following conclusions are drawn from the experimental data:in contrast,it is best to have a shock absorber in a stable electric field,the damping performance is poor at the condition of loading electric field and worst at the condition of no electric field.It also shows that the change of the electric field will make the shock absorber effect of the electrorheological elastomer damper also change.The experiments show that the damping pressure electric material controlled ER damper is feasible,the design verify the feasibility of self-energized damping.