Method of utilizing finite element modeling to judge whether turntable bearing meets requirements

Abstract

Provided is a method of utilizing finite element modeling to judge whether a turntable bearing meets requirements. A turntable bearing model is established in ANSYS according to a structure parameter of the turntable bearing. Total freedom constraints are imposed on a lower end face of an outer ring of the turntable bearing model, and a radial load, an axial load and an overturning moment load are imposed on an inner ring. Load data of a rolling body is solved and obtained. The security coefficient of the bearing is calculated by utilizing the maximum rolling body load data, and whether the security coefficient meets the requirements. According to the method of utilizing the finite element modeling to judge whether the turntable bearing meets the requirements, the ANSYS is utilized to establish a 'rod-entity' hybrid finite element model of the turntable bearing, and a contact model between an entity rolling body and an entity rolling path is dispensed. The finite element model obviously lowers requirements to computer resources, and the calculation time is greatly shortened.

Description

technical field [0001] The invention belongs to the field of checking of slewing bearings, and specifically relates to a method for judging whether the slewing bearing meets requirements by using finite element modeling. Background technique [0002] The slewing bearing is a kind of bearing with a special structure that can bear the combined action of radial load, axial load and overturning moment load at the same time. It is widely used in cranes, excavators, shield machines, stockers, wind power generators, medical CT In the rotary mechanism of mechanical systems such as aircraft, radar antenna and astronomical telescope. The analysis and calculation of the rolling element load distribution of the slewing bearing and the further calculation of the safety factor of the bearing are the basis for the type selection application and structural design of this type of bearing. The most critical is the calculation of the rolling element load distribution of the slewing bearing. ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of high computer configuration requirements, long calculation time and easy failure of calculation when the existing finite element method first calculates the load of the bearing rolling body and then uses the load data to calculate the safety factor, the present invention provides a method using Finite element modeling is a method to judge whether the slewing bearing meets the requirements. This method uses finite element software to model the slewing bearing, and then applies the load and solves the load of the rolling element with the largest load. Based on this, the formula is used to calculate Safety factor, and then judge whether the safety factor meets the requirements

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