Study on the Three Degrees of Freedom Model of Leaf Spring

Abstract

In the analysis of car frame that considers the leaf spring, the three degrees of freedom model of leaf spring was proposed. It would be compared with the commonly used equivalent model at present. There is a clear difference between the impacts of the two models on the structure analysis of the frame. The stress and deformation of the frame with the three degrees of freedom model is greater than the commonly used equivalent model, and there is only a smaller value range of lightweight optimization. Through the comparison between the two models, it can be seen that the three degrees of freedom model can transfer force and moment of force in all degrees of freedom, which illustrates the stronger reliability of the three degrees of freedom model of the leaf spring.