静圧スラスト軸受の熱弾性流体潤滑特性

抄録

The thermoelastic behavior of hydrostatic thrust bearings is analyzed numerically. Mineral oils, HWCF, seawater, and tap water are studied as working fluids. The physical properties of these fluids are expressed as a function of temperature and pressure. The heat transfer and thermoelastic distortion of the bearings are considered. The performance of the bearings is evaluated by the load carrying capacity, mass flow rate, friction torque, and power loss. The performance of the bearings using mineral oils are greatly influenced by the operating conditions than that using HWCF, seawater, and tap water. Also, the higher the viscosity, the greater that influence. The effects of the changes in the physical properties of the fluids due to the operating conditions on the mass flow rate and friction torque are great, compared with the load carrying capacity. The supply pressure and film thickness affect the performance of the bearings much more than the speed of rotation. The effects of the changes in the physical properties and distortion of the bearings depend on the characteristic of the restrictor.