Abstract

FLORES MORENO, Raudel et al. Structural Evaluation of an Agricultural Trailer Axle Subjected to Impact Loads. Rev Cie Téc Agr [online]. 2020, vol.29, n.1  Epub Mar 01, 2020. ISSN 2071-0054.

The dynamic load coefficients allow obtaining the tensile and deformational states in parts and structures subjected to dynamic loads with an acceptable degree of accuracy. In the present investigation, the dynamic load coefficients are determined and a structural evaluation is carried out on an agricultural trailer axle, subjected to a static vertical load of 20 kN. The energy method was used to determine the dynamic load coefficients and the simulation by the finite element method was performed to determine static stresses and deformations. Applying this method, the structural evaluation of the agricultural trailer axle subjected to impact loads was achieved, with a low computational requirement. For a free fall height of the trailer of 200 mm, with a load of 20 kN on each axle, if the wheels were rigid, an excessively high dynamic load coefficient would occur. It would cause exceeding the elastic limit of the axis material more than five times, while an impact height of that same level, can be damped by the tires, without using other damping means (springs), with a safety coefficient of 2.5.

Keywords : Dynamic stresses; numerical simulation; deflections.

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