Mechanical analysis of a rollover protection system for the cab of agricultural tractors category T1 by means of FEM simulation
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Abstract
Currently, the rate of rollover accidents in agricultural tractors is high, with indicators of injuries and serious damage to operators. The main objective is to perform a dynamic load test for tractor cabs employing simulation according to EU 1322/2014. For the impact assessment, the finite element method is employed to the cab structure of a tractor model T1, considering the impact energy absorption requirements in LS-DYNA software. ASTM A36 material with standard thicknesses from the manufacturer was considered, in addition to restrictions in the contact points and mobility of the impact pendulum with the conditions established for the test. The results obtained in this research were maximum stress values of 375, 4 MPa during the impact and 339 MPa of residual stresses after the impact, reaching a final elastic deformation of 58.58, keeping within the admissible margin for the rear impact test. It is concluded that the simulation by the finite element method allows obtaining admissible results in the design of tractor cabins, being an important complementary resource in the validation and optimization of structures by means of physical tests.
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