Open AccessON DETERMINATION OF ARMORED VEHICLES MOTION STABILITY ON A CURVED TRAJECTORY
Author(s) -
О. Akimov,
V. Boiarov
Publication year - 2020
Publication title -
zbìrnik naukovih pracʹ deržavnogo naukovo-doslìdnogo ìnstitutu viprobuvanʹ ì sertifìkacìï ozbroênnâ ta vìjsʹkovoï tehnìki
Language(s) - English
Resource type - Journals
ISSN - 2706-7386
DOI - 10.37701/dndivsovt.4.2020.01
Subject(s) - trajectory , stability (learning theory) , motion (physics) , control theory (sociology) , engineering , turning radius , heading (navigation) , computer science , marine engineering , aerospace engineering , control (management) , physics , artificial intelligence , astronomy , machine learning
The article analyzes methods for assessing the stability of the armored vehicles motion on a curved trajectory. The development of new types of armored vehicles and the modernization of existing ones require ensuring its stability of motion to overturn. The motion on a curved trajectory when making turns and overtaking is especially dangerous.
Determination of armored vehicles stability to overturn to ensure safe movement is an urgent problem, which is closely associated with the solution of important scientific and practical problems.
Numerous scientific works have been devoted to the study of the dynamics of automobiles, on which the methods for calculating dynamic characteristics are based.
Assessment of armored vehicles motion stability to overturn can be carried out by experimental methods, in particular by loading it with a static moment until the wheels come off and start tipping over or by placing it on an inclined platform that can change the tilt angle, fixing the beginning of the tipping
Determination of an armored vehicle stability during road tests can be carried out at training ranges when moving in a certain turning radius with different maneuvering speeds, fixing the beginning of the overturn, but this method contains certain deficiencies associated with the need to strictly control the beginning of the overturn.
A method is proposed for determination of armored vehicles motion stability taking into account the dynamic characteristics of the armored vehicles.
A dynamic model of natural oscillations of the vehicle in a horizontal plane in the perpendicular direction to the motion allows to determine the frequency of natural oscillations at gross vehicle weight.
An approach of an armored vehicle’s angular velocity when moving on a curved trajectory to the frequency of natural oscillations leads to an increase in the coefficient of dynamism of the mechanical system as well as to a probability increase of overturn of an armored vehicle.
Recommendations on choosing a safe speed when making turns at various turning radii were developed.