Análisis numérico/experimental del comportamiento mecánico a flexión de las ballestas recuperadas en frío empleadas en vehículos pesados HINO GD

Abstract

The experimental work was based on the numerical / experimental analysis to flexion of the leaflets recovered in cold, the study arose thinking about the suspensions of the heavy vehicles that are widely used for their functionality since they support large loads, It has a low cost of manufacturing And maintenance. The arrow loss of the package is given to continuous work and when the load to which they are normally exposed is exceeded, causing loss of the mechanical properties of the steel with which they are manufactured. In “Talleres Silva” is known a procedure that has not been technically proven, It consists of disassembling the package of the chassis and differential to later dislodge the sheets one by one, the first sheet is the one that must be adapted to the ideal curve or to the to be curved, the rest of the sheets are slightly curved a little more than the first sheet with the purpose of leaving a small intermediate space, the last step is to fix the central bolt and then mount the vehicle. Bending tests were carried out in different working conditions, the data that was obtained were simulated through an FEA, making comparisons of the test to bending and it was determined if the recovery of leaf springs is feasible. In the flexion test together with the simulation by finite elements it allowed us to have more accurate efforts since the coefficient of rigidity depends on the deflection and in In this case, an error of less than 10% is maintained, except for the one of the new Vanderbilt package, this is because it had an arrow greater than the other three packages before carrying out the test and its deflection it has been affected proportionally with that of your initial arrow height.