Research on Static Characteristics of Hybrid Bearing under Laminar and Turbulence Mixed Patterns
|Course||Mechanical Design and Theory|
|Keywords||Hybrid Bearing Turbulent conditions Mixed flow regime Finite Element|
Hydrostatic radial sliding bearing with the depth of the cavity due to the depth of the cavity and seal oil film thickness at the edge of the biggest difference , often leads to turbulence , laminar or transition zone in the same bearing cavity , this study established layer flow , turbulence coexist film mathematical model , using the finite element method calculated the parameters of the different flow states coexist sliding bearing pressure distribution and the main static characteristics . First, discusses the advantages and disadvantages of several turbulent lubrication mode , laminar flow , turbulence coexist film Reynolds equation and boundary conditions and a finite element analysis , the preparation of the corresponding program . Secondly , speed , oil pressure , and the eccentricity of the bearing system in the coexistence of different flow parameters bearing static characteristics . The calculations show that in the same operating parameters , hydrodynamic radial bearing the bearing capacity of the turbulent conditions , the friction , the friction torque maximum , minimum mixed flow pattern followed by laminar flow , bearing side vent flow by the flow pattern affect change is more complex , eccentric laminar flow calculation results are significantly greater than the results of the calculation of the turbulent situation . In addition, the size of the critical Reynolds bearing static characteristics of the coexistence of different flow . Therefore, how to accurately determine the critical Reynolds hydrodynamic plain bearings is an important question for future research .