Abstract
Geometry modified thrust bearings exposed to rolling and sliding contact are subjected to wear and localized frictional heating caused by relative slip between the two sliding surfaces. This leads to a rise in temperature, thermal stresses and changes in the elastic and plastic strength and physical properties of the material. The changes in the properties in turn alter the stress state, the displacement field, life and reliability of the bearing. Hence, a finite-element model is created to study the dynamics of groovy thrust bearing. In this paper, Hertz contact theory and numerical method are used to simulate the dynamics and kinematics of groovy ball bearings. The optimal loading parameters are identified in this study based on the analysis of the system responses and properties. The results of the numerical analysis and validation are presented. The numerical analysis proves the concept of transforming rotational motion into axial oscillation and demonstrates the capabilities of the numerical simulation to accurately model the dynamics of the groovy ball bearing.
Highlights
Drilling through hard rock has been a restraining factor to economically develop significant hydrocarbon reserves in several geological settings
Resonance Enhanced Drilling (RED), was developed at the University of Aberdeen to overcome this challenge [1]. This current research is focused on contact interaction between rolling element bearings (REB), which serve as the main mechanical component of RED module designed to operate under high frequency dynamic rotary action and static preload
The balls are constrained in translation in both lateral and longitudinal directions and the top race is constrained in all degrees of freedom (DOF) with exception of translation and rotation in the vertical direction
Summary
Drilling through hard rock has been a restraining factor to economically develop significant hydrocarbon reserves in several geological settings. The high cost to explore and develop these reserves is of considerable importance. Resonance Enhanced Drilling (RED), was developed at the University of Aberdeen to overcome this challenge [1]. This current research is focused on contact interaction between rolling element bearings (REB), which serve as the main mechanical component of RED module designed to operate under high frequency dynamic rotary action and static preload. This study, aims to develop an ultimate tool for optimal design of the dynamic exciter of RED module [2]
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