Abstract
Issues related to the theory and practice of creating or upgrading vehicles using elastic elements in suspensions with nonlinear progressive characteristics are considered. As such, a suspension with a pneumatic elastic element having design features that affect vibrational processes is considered. Theoretical studies (development of a mathematical model and calculations of free vibrations) were carried out at an object with parameters (mass, size) close to armored personnel carriers BTR70, BTR80. The aim of the work is to create the necessary tools within the framework of the methodology of applied optimal design of complex technical systems. A mathematical model is proposed for studies by numerical methods of free oscillations of a vehicle with the relaxation qualities of a suspension. A numerical experiment was carried out to assess the effect of "structural" friction in the movable suspension joints on the configuration of the object of study in the process of disturbance perturbation and attenuation, as well as to identify the features of the oscillatory process. A numerical experiment was carried out at the facility with the proposed hydropneumatic suspension from the ball - a helical gear mechanism. The calculations were carried out using the Runge - Kutta method using the original program.
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