Lubrication Performance And Thermal Structure Coupled Analysis Of Water Lubricated Rubber Alloy Slab Bearings

Water lubricated rubber slab bearings lubricated with water have performances different from which lubricated with traditional oil as the medium of metal bearing lubrication mechanism. The viscosity of water is only 1 / 100 compare with oil, when the water supply pressure is high and the journal at high speed, the stream prone to turbulence, so the lubrication system on the finite element analysis can not be assumed to be laminar flow model of water film. Low modulus of elasticity of rubber materials, when the bearings in hydrodynamic lubrication, large deformation of rubber bearings that can not be like the metal bearings is ignored. Rubber elastic deformation of the concessions made to the shaft eccentricity greater than or equal to1. Water lubricated rubber alloy slab bearings'groove makes the water film pressure is low than the presence of oil lubrication, while the temperature on the mechanical properties of rubber materials greatly influenced, the cooling water in grooves can take the heat away which was produced by friction; another side grooves provide space for the deformation of rubber, so the rubber and copper bonding surface to improve the stress.Thesis contrapose water lubricated rubber alloy bearing strip special lubrication mechanism, the use of Workbench CFX finite element software for 3D on the bearing lubrication system on numerical simulation. Papers from the rotational speed, eccentricity, rubber materials, lath structure and so on to study the lath-type water lubricated hydrodynamic bearing performance which about the pressure distribution on the water film, water film flow field and water film thickness The rubber bearing lubrication process is a two-way coupling, so the rubber elastic deformation, stress distribution is also the thesis research.Subsequent paper passed the experimental study of the temperature on the properties of rubber material. When the bearings of water supply system failure or bearings overload, the shaft and the bearing were in dry friction. When the bearing system in dry friction is not only the friction coefficient would increase which would speed up the shaft and bearing wear, but also to change the bearing temperature mechanical properties of rubber and even accelerated aging of burning rubber.Using experimental data obtained, the paper further use of finite element software ABAQUS. The water lubricated rubber alloy slab bearings under dry friction in the thermal structure of the coupling is analyzed. By analyzing the thesis study when the water lubricated rubber slab bearings under dry friction condition, the bearing contact surface temperature distribution, the contact stress distribution and the energy changes with time.This research is supported by the State Natural Sciences Foundation General Projects:"Innovative design theory and method of water lubricated bearing system with large size and high specific pressure"(Number: 50775230). The paper will provide reference methods for the study of lubrication mechanism and thermal structure under dry friction condition.