Study about stress and deformation of 3- Stage helical gearbox casing

Abstract

The finite element analysis of 3 stage helical gearbox that constitutes the driving mechanism of a double
bascule movable bridge was performed. The triple reduction helical gearbox was made of ASTM A36 Steel. The
triple reduction helical gearbox was a three stage gearbox transmitting 112.5 H.P. at 174 rpm with a reduction
ratio of 71.05:1. The reactions were used to apply loads to the finite element model of housing. Geometric model of
3 stage helical gearbox was built using NX-8 and meshed using the ANSYS finite element program. Static structural
analysis was performed using a combination of shell and solid elements to determine the deflection and to estimate
the stress distribution in the housing. The aim of this project is to reduce weight with less stress and deformation so
that changes in materials. The detail analysis of casing by ANSYS software result for different steel alloys used in
manufacturing the casing of 3 stage helical gearbox. It will make the reduce scale model and make several testing
on that model and hence, it conclude that my model is capable to take the load on that conditions.