Analysis of existing methods for calculating loading of parts at assessment of fatigue strength

Abstract

The paper shows the results of analysis of methods used for determination of loads on parts of fatigue strength tests. As an example, the author has calculated loading of open-box car vertical body posts by means of two currently used methods. At comparison of gained results the author has established that calculated values of forces and amplitudes of body posts loading differ almost 3 times. Consequently, key differences of the methods have been revealed. As a result, it is proposed to improve a method of calculation and to develop the only reliable method of determination of forces and amplitudes of loading of parts that are tested on fatigue strength.