Calculation and substantiation of design parameters of automotive mechanical stabilizers of lateral stability with adjustable rigidity

Abstract

The safety of the automobile can be characterized by such concepts as maneuverability, controllability and stability of its movement. To improve the controllability and stability of the automobile during the design, a number of different activities are carried out. In particular, from the point of view of design, a stabilizer of lateral stability is installed on almost every vehicle. It is designed to reduce the transverse roll of the sprung part of the automobile caused by movement along a curved path, a strong side wind or a road slope. Thus, in this article we consider a possible application of stabilizers of lateral stability with variable rigidity on high-speed vehicles, together with the suspension of the rear axle, which has "steering up" kinematics. The influence of such a combination on the stability of the vehicle's motion and its controllability is considered based on the basic principles of the theory of motion of wheeled vehicles. And most importantly, the developed technique for calculating the mechanical stabilizer of lateral stability with variable stiffness is presented, which in turn assumes the use of the finite element method for calculating the stiffness of structural elements of the stabilizer. It should be emphasized that stabilizers of this design are used mainly for racing cars. But the method of calculating them in the article can be shifted to more complex designs used in the serial automotive industry. It can be stabilizers of lateral stability with the built in hydraulic, pneumatic or electromechanical elements, allowing to carry out adjustment of torsional rigidity of the stabilizer. This article is one of the few in the Russian-language literature that covers the question of the methods of calculating stabilizers of lateral stability with variable rigidity.