Abstract
This project focuses on the analyzing different materials for torsion bar suspension system for Tank T-55 for optimizing its performance for cross country mobility and ride comfort. This suspension system is aimed to improve wheel travel and angle of twist on all terrain conditions from rough to flat surfaces. The different materials studied are carbon steel and alloy steel for their suitability as torsion bar and proposed de-sign is accomplished through the material selection and analytical calculation with analysis for shear stress, total deformation and strain. alloy steel is considered as alternative material for torsion bar based on the result of its good strength in shear stress and store maximum energy in the case of strain energy.