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Centripetal rolling bearing fatigue life calculation method

A technology of fatigue life and rolling bearings, which is applied in calculation, instrumentation, electrical digital data processing, etc., can solve problems such as no consideration, and achieve the effect of accurate calculation

Active Publication Date: 2019-05-14
TAIYUAN UNIV OF TECH
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Problems solved by technology

However, this assumption does not consider the influence of PVR (Piezoviscous rigid, pressure-viscous rigid) lubrication state. The contact load between them will not be zero (Houpert L.Hydrodynamic load calculation in rolling element bearings[J].Tribology Transactions,2016,59(3):538-559.)

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  • Centripetal rolling bearing fatigue life calculation method
  • Centripetal rolling bearing fatigue life calculation method
  • Centripetal rolling bearing fatigue life calculation method

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Embodiment Construction

[0058] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than All the embodiments; based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

[0059] Such as figure 1 As shown, the embodiment of the present invention provides a method for calculating the fatigue life of a radial rolling bearing. First, considering the PVR and EHD (Elastohydrodynamic, elastohydrodynamic) lubrication state, a pseudo-static model of the rolling bearing is established; then, based on the established The pseudo-static model calculates the contact load between the rolling elemen...

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Abstract

The invention belongs to the technical field of bearings, and discloses a centripetal rolling bearing fatigue life calculation method, which comprises the following steps: (1) comprehensively considering PVR and EHD lubrication states, and establishing a rolling bearing quasi-statics model; (2) calculating a contact load between the rolling body and the ferrule based on the established quasi-statics model; (3) calculating a rated rolling body load and an equivalent rolling body load of the ferrule; and (4) calculating the fatigue life of the bearing. According to the method, the influence of PVR and EHD lubrication states on the internal contact load distribution of the bearing and the fatigue life of the bearing is comprehensively considered, and a more accurate fatigue life calculation method can be provided for the rolling bearing.

Description

technical field [0001] The invention relates to the field of bearings, in particular to a method for calculating the fatigue life of a radial rolling bearing. Background technique [0002] Radial rolling bearings are widely used in key fields such as energy, transportation, and transportation. The fatigue life of bearings has an important impact on the normal service and safe operation of the entire equipment. Therefore, it is necessary to calculate the fatigue life of bearings. The most widely used fatigue life calculation method is based on the Lundberg-Palmgren theory (Harris T A, Kotazlas M N. Rolling bearing analysis: essential concepts of bearing technology [M]. Boca Raton: CRC press, 2007.). In this theory, in order to calculate the fatigue life of the bearing, it is necessary to analyze the contact load distribution inside the bearing first. At present, many scholars have proposed corresponding calculation models to calculate the contact load distribution inside the...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 牛蔺楷钮晨光兰媛李国彦李利娜武兵熊晓燕
Owner TAIYUAN UNIV OF TECH