关键词: 钢板弹簧卷耳；运动学特性；Adams；仿真分析；悬架

Abstract: Based on the arc theory of International Society of Automotive Engineers, the motion trajectory of the main leaf center of the leaf spring with a few pieces of variable cross-section leaf spring was studied when the upper and flat ears were used. The comparison results of plane drawing show that the longitudinal displacement of the flat leaf spring ear is smaller than that of the upper leaf spring ear. 1/2 front suspension simulation model of a vehicle was established in Adams, and the influence of the two leaf spring ear structures was further analyzed. The suspension movement trend of the flat and upper leaf spring ear schemes was simulated and analyzed under the conditions of parallel wheel jump and double wheel reverse jump. The results show that the flat leaf spring ear scheme is beneficial to improve the wheel alignment parameters and vehicle handling and stability performance, which can provide a theoretical basis for the subsequent design of leaf spring scheme.

Key words: Leaf spring ear; Kinematic characteristics; Adams; Simulation analysis; Suspension