Design and simulation of magnetorheological damper for light vehicles Using Multi- Physics Coupling

Vibrations can have favorable or undesirable effects on systems. The discomfort of the vehicles as a result of moving on rough roads is an example of the adverse effects of vibrations. A variety of dampers are used to prevent these damages. MR is one of the advanced technologies in the field of suspension systems. There is a lot of research today to increase the damping force, reduce construction costs, and design and simulate a damper with ease of construction, which indicates the necessity of a progressive research. In this paper, after the theoretical reviews the equations governing the mechanical model (by the Bingham plastic model), the electromagnetic field (by the Maxwell and Amp law) and the flow field (by the Naviers-Stokes equation) Until a double-rod Damper, which is an exquisite example of these dampers, is designed and simulated through the Camsol software through a multiphysics coupling (fluid-solid-magnet) interaction and then analyze the results. Also, the sample designed, unlike previous examples of these dampers, does not require a gas compensatory chamber. The information obtained from the simulation results showed that due to the requirements of a light car aid that requires a damping force of more than 1000 Nm, the damper is a suitable semi -active device and can produce the minimum amount of the required in the required intense force. Transportation and other areas, such as the suspension of light cars, should be used and improve the comfort and increase the quality of the vehicle.