Boundary Element Method for Calculation of Rolling Bearing Load and Pressure under Elastohydrodynamic Lubrication Condition

Abstract

The invention belongs to the field of numerical analysis of multi-row rolling bearings in rolling mills, and specifically relates to a boundary element method for calculating the load and pressure of rolling bearings under the condition of elastohydrodynamic lubrication, including introducing bearing boundary elements and contact width Hertz based on the three-dimensional friction elastic contact boundary element method. Correct the theory and the plate element, establish the bearing boundary element method; derive the friction coefficient equation according to the finite long line contact elastohydrodynamic lubrication theory; couple the bearing boundary element method with the finite long line contact elastohydrodynamic lubrication theory, and establish the bearing boundary under the elastohydrodynamic lubrication condition element method; write the Fortran calculation program of the bearing boundary element method under the condition of elastohydrodynamic lubrication for rolling bearings; this method can analyze the load and pressure distribution under the full model of multi-row rolling bearings, rolls and housings; it can change the roughness influencing factors , to analyze the load and pressure distribution of bearings under different lubrication conditions; only need to divide the surface units of bearings, rolls and bearing housings, with less unit division and high calculation accuracy.

Description

technical field [0001] The invention belongs to the field of numerical analysis of multi-row rolling bearings of rolling mills, and in particular relates to a boundary element method for calculating the load and pressure of rolling bearings under the condition of elastohydrodynamic lubrication. Background technique [0002] Rolling mill multi-row rolling bearings, as the key components of rolling mills, are subjected to large radial loads, axial loads and thermal loads during work, resulting in multi-row rolling bearings that are prone to unbalanced loads, resulting in a sharp decline in the life of the bearings and frequent abnormal occurrences Accidents such as burnout and large area fatigue spalling seriously restrict the improvement of production efficiency. The quality of its lubricating performance has a great influence on the life and vibration of rolling bearings in rolling mills. When the lubrication is good, the load and distribution of the bearing become the main ...

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Problems solved by technology

[0003] In the study of the load distribution of multi-row rolling bearings in rolling mills, the method often used is the finite element method, but basically the influence of roller bullet flow lubrication on the bearing load distribution is not considered. Under the problem, the finite element calculation results are not ideal;

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