Study on dynamic characteristics of metal helical spring

The vehicle performance has closely relation to suspension parameters (especially dynamic stiffness).In the light of this,the paper took example for metal helical spring.Dynamic characteristics were studied in metal helical spring by FEM.An experiment was designed to validate the result,and the experiment proved that remarkable dynamic characteristics existed in metal helical spring.During the course of the spring operation,the spring bears the weight of load.The mass of the load has effect on dynamic characteristics of the spring,so we specially studied on the relationship between the mass of the load and dynamic characteristics.As the result,the effect of the spring's mass on dynamic characteristics is weakened with the increasing of the mass of the load on the spring.