Modeling and analysis of helical and wave spring behavior for automobile suspension 2019-28-0130
Suspension is an indispensable element of automobiles which plays a crucial role in maintaining stability and the ride comfort. Helical springs are used in automobile suspension for many decades. The stiffness of the spring and presence of shock absorber plays a major role while negotiating a huge amount of load. Therefore, the cost of the suspension increases proportionally in commercial vehicles. In this present work a helical and wave spring is designed and static cum dynamic analysis is done by using ANSYS for comparing their performance and to eliminate the downside of the suspension. The geometry of the helical spring is designed using helix curve and wave spring is designed using Sinusoidal equation. Modelling of both the springs is done using ANSYS. Chrome silicon and music wire are chosen as a spring material. The responses like stress and deflection of helical spring and wave spring for both the materials under static loads of 3000 N, 3500 N, 4000 N is obtained. Further the dynamic analysis is conducted on both the springs under transient load conditions to obtain their responses. The results show that wave spring of chrome silicon has better properties for both static and dynamic load conditions. From the analysis it is concluded that the use of helical spring with shock absorber system can be replaced by the newly developed chrome silicon wave spring suspension system. Due to this system incorporation in the vehicles the free length is reduced.