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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Gridnev S.Yu. – candidate of technical science, associate professor Voronezh State University of Architecture and Civil Engineering The organization address: 394006, Russia, Voronezh, ХХ-letia Ortiabria st., 84 Budkovoy A.N. – leading engineer Open Joint-Stock Company «Voronezhproekt» The organization address: 394036, Russia, Voronezh, Pushkinskaya st., 1
Title of the articleAssessment of the dynamic impact of a car on the road during braking and acceleration with taking into account the kinematic perturbations
Abstract.In this article influence of kinematic indignation from roughness of the carriageway on dynamic impact of the car on a way was estimated during the braking and dispersal. Such research is actual as such modes of movement are most approached to real service conditions. (Dispersal) or equal slow (braking) movement modes were considered uniformly accelerated. For performance of research the flat dynamic model of the triaxial car was used. In the equation of angular fluctuations of a body of system of the differential equations composed, considering change of speed of movement was added, and the additional moment which is redistributed on a car axis is formed. The carriageway profile under wheels was set discretely by results of leveling of the existing carriageway or generation on the PC according to the set statistical characteristics. Numerical researches of fluctuations of the car at various accelerations of braking and dispersal, and also depending on the provision of the beginning of braking on the set site of a profile are carried out. Some features are revealed. In the case under consideration the accounting of a profile at non-uniform movement led to small increase in dynamic pressure of a forward axis. Essential influence of a profile, the main thing, and image affected fluctuations of a back axis and led to growth of dynamic factors of pressure of an axis on a way. The braking place essentially influences sizes of dynamic pressure of axes.
Keywords.Dynamic model of the car, braking and acceleration, profile path, kinematic indignation, dynamic impact on the way.
For citations:Gridnev S.Yu., Budkovoy A.N. Assessment of the dynamic impact of a car on the road during braking and acceleration with taking into account the kinematic perturbations // Izvestiya KGASU. 2012. №4(22) P.409-414.


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