Analyses of static and dynamic behavior of coned disk springs: Effects of friction boundaries

In the present study, we perform a systematic survey of the effects of friction boundaries on the static deformation behavior of coned disc springs subjected to an axial load using the finite element method. Based on the equivalence of energies and friction law, a simplified method for predicting load–deflection curves is developed in which hysteresis due to friction at the edges is included. We then extend the proposed method to stacked springs in series and in parallel. The validity of the method is then verified by comparing the results obtained with the finite element analysis and experiments under various conditions. In addition, the dynamic characteristics of coned disc springs subjected to an axial forced vibration are studied using the proposed method. The effect of friction boundaries, i.e., frictional dampers, is investigated under several frictional conditions, forced vibration, and initial loads. It is shown that the present method can also be applied for examining the dynamic characteristics of coned disc springs.