The Structure Analysis And Experimental Study Of The Air Suspension With Double Vertical Arm Type And Four Airbags In The Bus Passenger Compartment

With the progress of the times and the improvement of people's living standards, the passenger put forward to improving their comfort and safety increasing. Passenger's comfort is related with the body of the inherent vibration characteristics, but the body of the inherent vibration characteristics is associated with the characteristics of the suspensions. Therefore, vehicle suspension is an important component to ensure people's comfort. At the same time, as a transmission connection component between the frame (body) and the axle (wheel), vehicle suspension is also important to the safety of the car. Therefore, suspension and structural form which are very concerned about by users are involved into one of the vehicle assembly and into one of the technical specifications. Before suspension designing, whether the choice of the structure and performance parameter is reasonable or not, all directly affected to the comfort, stability and comfort of the vehicle. Easing the impact of reducing road damage and extending the service life of road and bridge when the vehicles are on the road is also of great significance. Thus, suspension system is very important in the modern automotive.Although the research of air suspension started earlier in China, but due to various reasons,it regained attention until the end of the last century. With the domestic bus's technology and the strong market demand, we are researching on the air suspension, however, the majorities are concentrating on the air spring and active suspension and the scope of the study, the research on the forced suspension and assembly performance is rare.In this paper, we choose a large passenger vehicle with double vertical arm type four airbags air suspension as the research object and use finite element analysis and vibration test technology. Firstly, we make a simulation analysis using finite element analysis technology (ANSYS) to the air suspension components, and then make an air suspension load test using hydraulic power environment simulation system and suspension assemblies for the simulation. At the end, we make a comparison between them.The result shows that the combination research of finite element analysis and vibration tests on the air suspension is able to optimize the structure of air suspension and the stress characteristics in actual use, thus it is contributing to the achievement of air suspension in the design and structural performance and technical problems, thereby enhancing the safety and comfort bus which install the air suspensions.