Modal Analysis and Research of Spherical Plain Bearings in Different Materials based on the ANSYS-Workbench

Abstract

Bearings are critical components of mechanical foundation of the relationship between economic development. They are known as the mechanical "joint", and a spherical bearing (an outer of the inner spherical surface and an inner of the outer spherical surface) is a typical plain bearings, which has a simple structure, small size, large capacity, wide temperature range, long life and other advantages. They have been widely applied to metallurgical rolling equipment, filling equipment, hydraulic turbine, turbine-expander, instrumentation, mining machinery, marine machinery, textile machinery, astronautics and navigation and other fields[1-2]. Especially with the rapid development of the aerospace and automobile industry. They are made more stringent requirements of spherical plain bearings in precision, velocity, sensitivity, life, reliability, temperature, corrosion resistance, etc. [3]. With the use of air and space component of weight loss and weight requirements increasing car, looking for a material both a high tensile strength, high specific strength and high ductility, but also has high temperature resistance, corrosion resistance of new materials become researchers efforts.In this paper, GCr15 and new materials TiAl based alloys respectively as spherical plain bearing material, the use of UG modeling software for its modeling and modal analysis by ANSYS-Workbench of simulation software and then compare these two materials modal frequencies and mode shapes of spherical plain bearings.

Synergistic effects of surface strengthening and surface micro-texture on aviation spherical plain bearing tribological properties

“…2 It not only has an important influence on the efficiency, accuracy, reliability, and lifetime of the product, but also decides the basic function of the whole machine. 3 According to various researches, the surface microstructure, machining accuracy, micro-hardness, tribological properties, and interface lubrication of the spherical plain bearings are the main factors contributing to the wear of spherical plain bearing.…”

Dynamic Simulation Analysis of the Mid-Strain-Rate Tensile Testing Machine

“…Fig. 15 NO.6 mode shapes It is observed from the 6 order modal frequency and vibration modes that the natural frequency is very high and there are similar vibration modes under different phase because the fixture is axial symmetry [11] . The modal frequencies of the first two steps should be designed as far as possible to the operation frequency range to avoid resonance response and reduce structural damage of the test machine.…”