Research on the Design Parameters of the Diaphragm Based on the Torsional Static-characteristics

In view of the diaphragms of traditional diaphragm coupling in conditions of large centrifugal force, the hub or rim with prominent stress concentration, the effective size of the elastic film is small, and the tangential load distribution uneven by the bolt connection, a closed diaphragm coupling is presented, it is connected by interference fit, and eliminates the membrane disc rim, increases the effective size, improves centrifugal action. Under the static torsion loading conditions, deformation and stress distribution with the variation of membrane disc thickness, taper, double curvature and radial dimensions of the diaphragm having the linear surface, cone surface and hyperbolic surface are studied. The stress and deformation characteristics of three kinds of disc surfaces are summarized by analogy, and the design rules and selection principles of various types of diaphragm for practical application are obtained.