Abstract
The present study performs the systematic survey for the effect of friction boundary on static deformation behavior of coned disc springs subjected to axial load by using FEM. Based on the equivalent of energies and the friction law, a simplified method for predicting the load-deflection curves is developed in which the hysteresis due to friction at edges is included. We then extend the proposed method to stacking springs in parallel and in series. The validity of the present method is then verified by the comparison of experimental results obtained under various conditions.