Stress Analysis of Nonlinear Simulation Model for Diaphragm Coupling under Compound Load
The diaphragm coupling was affected by various load couplings such as torque,centrifugal load,axial misalignment and angular misalignment during operation,an overall simulation model of the nonlinear diaphragm coupling was established,considering structural nonlinearity and frictional contact.The deformation and stress characteristics of the diaphragm coupling under the compound load were ana-lyzed.The influence of the friction coefficient between the diaphragms and the friction coefficient between the diaphragm and the gasket on the stress characteristics of the diaphragm was obtained.The results show that the outer diaphragm is most likely to be damaged under the action of compound load.Increas-ing the friction coefficient between the diaphragm and the gasket can reduce the maximum equivalent stress of the outer diaphragm under comprehensive misalignment.The friction coefficient between the dia-phragms has little effect on the maximum equivalent stress of the diaphragm.
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