The Static And Dynamic Characteristics Analysis And Parameter Optimization Of Herringbone Groove Thrust Bearing

With the development of mechanical equipment in the direction of high precision and high speed,increasing demands are proposed on the rotor bearing system.Due to the advantages of small friction loss,reliable performance and high oil film stiffness,sliding bearing is widely used in different applications,based on the fluid hydrodynamic effect.Compared to other channel of the sliding bearing,herringbone groove thrust bearing mainly is used in high speed,light load working conditions.This kind of working condition requires high stability and low friction loss of bearing.Bearing structure has significant effect on bearing performance.The static and dynamic characteristics analysis under different structure parameters and parameter optimization is important to bearing performance.In this paper,the finite element method were used to solve the pressure distribution of individual groove and the MATLAB programming software was used to calculate.Then the results are compared with the existing literature calculation,which proved the correctness of the the finite element program.The bearing capacity and friction torque was obtained by integrating the pressure distribution.The impact of structure parameters(groove number,groove depth,groove width ratio and spiral angle)on the bearing capacity and friction torque was analyzed.The axial stifness and axial damping of herringbone groove thrust bearing was calculated using the perturbation method.Solving the perturbation pressure equation and improving MATLAB procedure for solving steady-state Reynolds equations,the perturbation pressure was integrated to obtain the axial stiffness and axial damping of the herringbone groove thrust bearing.The impact of structure parameters(groove number,groove depth,groove width ratio and spiral angle)on the axial stifness and axial damping was analyzed.In this paper,the finite element method were used to solve the pressure distribution of individual groove and the MATLAB programming software was used to calculate.Then the results are compared with the existing literature calculation,which proved the correctness of the the finite element program.The bearing capacity and friction torque was obtained by integrating the pressure distribution.The impact of structure parameters(groove number,groove depth,groove width ratio and spiral angle)on the bearing capacity and friction torque was analyzed.The axial stiffness and axial damping of herringbone groove thrust bearing was calculated using the perturbation method.Solving the perturbation pressure equation and improving MATLAB procedure for solving steady-state Reynolds equations,the perturbation pressure was integrated to obtain the axial stiffness and axial damping of the herringbone groove thrust bearing.The impact of structure parameters(groove number,groove depth,groove width ratio and spiral angle)on the axial stiffness and axial damping was analyzed.It provides reference for the design of herringbone grooved bearing.