ABOUT CALCULATION AND EXPERIMENTAL ESTIMATION OF WORKING CAPACITY OF BALL JOINTS OF A VEHICLE CHASSIS. PART 1. CALCULATION BY SRENGTH CRITERION

BOGDANOVICH Alexander V., D. Sc. in Eng., Assoc. Prof., Professor of the Department of Theoretical and Applied Mechanics, Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">bogal@tut.by

The ball joints of vehicles are referred to the steering and suspension critical units. Strength calculation of the ball pin under static loading is usually performed in the practice of designing these units. In the article, the ball joint is considered as a tribo-fatigue system in which the zones that are dangerous in terms of bending stresses and wear are separated from each other, but are caused by the same load. The necessity of estimating the fatigue resistance of the  ball pin and taking into account the uneven distribution of wear over the mating surfaces of the ball head and the  liner is shown. The work is done in 2 parts. In the first part, the evaluation of the static and fatigue strength of the  ball pin is discussed, and in the second, the assessment of the wear resistance of the joint elements and the  proposal for a new method for testing the joint model are discussed.

ball joint, strength, wear resistance, friction, contact pressure, wear rate, tribo-fatigue system,
wear-and-fatigue tests

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