Design and Simulation Analysis of Suspension System for All Terrain Vehicle

This chapter proposes to design an All Terrain Vehicle (ATV) for complex road surfaces and determine the suspension structure, suspension frequency deviation, and static deflection through theoretical analysis. It establishes a quarter suspension shock absorber mechanical model and calculates the initial value of suspension stiffness. Furthermore, by establishing a virtual prototype simulation model, step signal impact simulations were conducted on multiple sets of ATVs with different suspension stiffness, and the optimal suspension stiffness with the best damping effect was obtained, which was consistent with the theoretical calculation value, verifying the correctness of the suspension shock absorber mechanical model and theoretical calculation. Finally, through step signal impact simulation and all terrain road excitation simulation, it was determined that the optimal damping coefficient for suspension shock absorbers under complex road conditions is 2.4.