Single-coil spring double-damping suspension system with completely decoupled rigidity

Abstract

The invention relates to a single-coil spring double-damping suspension system with completely decoupled rigidity. The single-coil spring double-damping suspension system is a vehicle suspension system based on ADAMSCar multi-body dynamics simulation. The single-coil spring double-damping suspension system comprises an upper cross arm, a lower cross arm, triangular arms, a push rod, a left guide rod, a right guide rod, spiral springs, dampers, an anti-roll rod, anti-roll rod connecting rods and anti-roll rod force arms, the upper cross arm and the lower cross arm are connected with a wheel upright and a vehicle body; two ends of a push rod are respectively hinged with the lower cross arm and the triangular arm; the left guide rod and the right guide rod are hinged to the triangular arm respectively, a piston rod of the left guide rod extends into a piston through hole of the right guide rod, the left guide rod and the right guide rod are sleeved with the spiral springs, the two dampersare hinged to the triangular arms on the two sides respectively, and the triangular arms are hinged to the anti-toppling rod force arms fixedly connected to the two sides of the anti-toppling rod through the anti-toppling rod connecting rods. According to the invention, the linear rigidity and the angular rigidity of the suspension are completely decoupled, and meanwhile, the lightweight design requirement is fully realized.

Description

technical field [0001] The invention relates to a vehicle suspension system based on ADAMS Car multi-body dynamics simulation, in particular to a single coil spring double damper suspension system with fully decoupled stiffness. Background technique [0002] So far, teams from more than 80 colleges and universities have participated in the Chinese Student Formula Racing Competition, and nearly 70 teams have participated in the Electric Formula Racing Competition. The damping system of domestic FSAE racing cars mostly adopts the form of double spring and double damping. However, the double-spring and double-damping damping system has an unavoidable defect: the linear stiffness and roll stiffness of the racing car are interrelated and affect each other, that is, when the linear stiffness of the device is adjusted, the roll stiffness will also change accordingly. The line stiffness also changes with the inclination stiffness. This coupling feature brings great inconvenience t...

AI Technical Summary

Problems solved by technology

However, the double-spring and double-damping damping system has an unavoidable defect: the linear stiffness and roll stiffness of the racing car are interrelated and affect each other, that is, when the linear stiffness of the device is adjusted, the roll stiffness will also change accordingly. The line stiffness also changes with the inclination stiffness

This coupling feature brings great inconvenience to the adjustment of the suspension parameters. To obtain the theoretically ideal line stiffness and roll angle stiffness, the team members can only keep changing these two parameters to make the adjustment result gradually approach the ideal value. The process is cumbersome and difficult to achieve the ideal value, and it violates the design concept of lightweight racing

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