Analytical and experimental study on the axial stiffness of multiple corrugated diaphragm coupling based on the corrugated circular plate theory

Abstract

Compared to traditional couplings, the multiple corrugated diaphragm (MCD) coupling has the advantages of high torque diameter and weight ratios, and high compensation capability. Due to the irregularity of the MCD, it is difficult to analyze and study it through traditional methods. In this paper, an analytical method for calculating the axial stiffness of MCDs is derived based on the mechanical theory of corrugated circular plates, and the results of the analytical method, finite element method, and stiffness tests are compared. The results indicate that the analytical solution of the MCD axial stiffness is consistent with the finite element analysis and experimental results. This proves the feasibility of analyzing the MCDs using the theory of corrugated annular plates. This study provides a theoretical basis for the design of MCD coupling and can guide the rapid design of MCD coupling.