Methodology for calculating the complete static carrying capacity of twin slewing bearing

摘要

Results of research work concerning a special design solution of slewing bearings which is a twin slewing bearing have been presented in this article. The twin slewing bearing has an 8-point contact zone ball-raceway which is considered in a cross section of bearing rings. Characteristic features of these bearings have been described. The main thesis of this work concerns the adaptation of modern computer methods for solving the structural design problems of twin slewing bearing. A two-stage research program including the analysis of local issues contact the contact zone ball-raceway and the global analysis concerning a static carrying capacity of the twin slewing bearing have been proposed. Calculations were performed by using the finite elements method (FEM), ADINA program, analytical Eschmann's formulas and classical mechanics equations. The models and calculation presented in this paper were performed and based on geometric and material parameters which have been defined for selected twin slewing bearing. The method of determining the profile curves of static carrying capacity for twin slewing bearing, including all components of the load was described fully. (C) 2016 Elsevier Ltd. All rights reserved.