Research of the applicability of different materials for axle beams of trucks

Abstract

The paper discusses the issue of usability of different materials in production of the front axle beams of trucks with a gross weight of 6 and 15 tons. Calculation models are presented to determine load conditions for different modeling cases: a road with diagonal unevenness with different truck speeds, a turn, a rearrangement, and an overcoming a single unevenness. From the calculation results it follows that when using 45H steel for the manufacture of front axle beams of the trucks under consideration, the strength of these parts is ensured. From the comparison of the characteristics of VCh50, VCh60 and VCh70 cast irons with the level of stress in the front axle beams, we can conclude that it is possible to use VCh60 cast irons (the design stress is only slightly higher than the yield strength) and VCh70 for the manufacture of front axle beams. In this case, it is necessary to consider the possibility of changing the design of the front axle beams in order to reduce the stresses that arise in these parts when vehicles move over uneven surfaces.