Abstract
Keywords: material strength, mechanical strength, mechanical strength structure, truck.
The strength structure of a transportation power-driven vehicle is a bars system that buildsup a complex frame, space loaded. Due to the multiple constraints and to the closed geometrical contours, the mechanical system is not only exterior but also interior redundant. In order to evaluate the value of mechanical stresses by analytical calculation, the indeterminedness must be solved. In this paper the mechanical indeterminedness calculation is made using the stresses method, only the transverse stress and the torque load will be taken into account. For a proper structure of the three axles trucks, the stresses distribution in the component bars will be determined. Thus, the determined calculation will make the basis of an automatic running program that allows the deceleration of different influences of the geometrical and loading parameters over the mechanical stresses. An application will be made on a particular structure using the constructive elements of a heavy transportation power-driven vehicle.