Combined disc springs;  ANSYS/LS-DYNA;  nonlinearity;  Explicit algorithms

Starting from the actual structural characteristics and specific working characteristics of the disc spring, the static stiffness test of the combined disc spring is carried out, and the nonlinear explicit algorithm of the finite element software ANSYS/LS-DYNA is used to calculate the continuous loading and load-unloading process of the stacked disc spring, and the load displacement relationship curve of the disc spring is obtained. Comparing the results and experimental values with the results of the traditional calculation method Almen-Laszlo formula, it can be seen that the results calculated by this method are basically consistent with the experimental values and are more accurate than the Almen-Laszlo formula. This provides an easy and correct way to select combination disc springs in engineering applications.