DESIGN AND ANALYSIS OF DAMPER SPRING AND ITS STRUCTURAL COMPONENTS

The main functions of automobile suspension systems are to isolate the structure and the occupants from shocks and vibrations generated by the road surface. The suspension systems basically consist of all the elements that provide the connection between the tyres and the vehicle body. A spring is an elastic object used to store mechanical energy. It is an elastic body that can be twisted, pulled, or stretched by some force. It can return to their original shape when the force is released. It is a flexible element used to exert a force or a torque and, at the same time, to store energy. The force can be a linear push or pull, or it can be radial, acting similarly to a rubber band around a roll of drawings. The torque can be used to cause a rotation. The design of spring in suspension system is very important. In this project a shock absorber is designed and a 3D model is created using CATIA V5. The model is also changed by changing the coil radius of the spring. Structural analysis and optimization are done in ANSYS 11.0 of the shock absorber by varying coil radius and spring radius. The analysis is done by considering loads, bike weight, and single person. Structural analysis is done to validate the strength and optimization is done to determine the better dimension of spring to carry applied load. Optimization is done for different dimensions to verify best size for spring in Shock absorber.