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2014•Machinery Design and ManufactureRequires access

Fretting Fatigue Characteristics of Interference Fit Joints of Wheel and Shaft in a Locomotive

Ping Xue-chen

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Abstract

When a locomotive is running,although the wheel set is in interference fit,fretting fatigue will happen in contact edge area. Amplitude of fretting and interfacial stresses are important factors that impact local life. Analysis of contact fretting of wheel set of a CRH under 31kN axial load has been done by ABAQUS. The relative sliding mode and stress distribution of a contact pair on the interference fitting surfaces between the wheel seat and wheel hub are calculated,and damage factor is calculated by energy density method to estimate the damage of contact surface. The results show that the energy density method can be used to predict the fatigue characteristic of the present problem.

About this research paper

What this paper is about

When a locomotive is running,although the wheel set is in interference fit,fretting fatigue will happen in contact edge area. Amplitude of fretting and interfacial stresses are important factors that impact local life. Analysis of contact fretting of wheel set of a CRH under 31kN axial load has been done by ABAQUS. The relative sliding mode and stress distribution of a contact pair on the interference fitting surfaces between the wheel seat and wheel hub are calculated,and damage factor is calculated by energy density method to estimate the damage of contact surface. The results show that the energy density method can be used to predict the fatigue characteristic of the present problem.

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Available abstract

When a locomotive is running,although the wheel set is in interference fit,fretting fatigue will happen in contact edge area. Amplitude of fretting and interfacial stresses are important factors that impact local life. Analysis of contact fretting of wheel set of a CRH under 31kN axial load has been done by ABAQUS. The relative sliding mode and stress distribution of a contact pair on the interference fitting surfaces between the wheel seat and wheel hub are calculated,and damage factor is calculated by energy density method to estimate the damage of contact surface. The results show that the energy density method can be used to predict the fatigue characteristic of the present problem.

Key concepts: Fretting, Interference fit, Structural engineering, Enhanced Data Rates for GSM Evolution, Interference (communication), Contact mechanics, Contact region, Materials science

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