Title

Durability Prediction of an Ultra-Large Mining Truck Tire Using an Enhanced Finite Element Method

Abstract

Ultra-class mining trucks used for material haulage in rugged surface mining terrains experience premature tire fatigue failure in operation. Typical failures include belt edge separation, ply turn-up separation, and tread base and sidewall cracking. The use of reinforcing fillers and processing aids in tire compounds result in the formation of microstructural in-homogeneities in the compounds. This article presents an application of the critical plane analysis technique for predicting the fatigue life of the belt package of an ultra-large mining truck (CAT 795F) tire of size 56/80R63 in a surface coal mine. Experimental data obtained from extracted specimens (sidewall, tread, and belt edge region) of the tire are used to characterize the stress—strain and fatigue behavior of the modeled tire. The tire's duty cycle stresses and strains were obtained from finite element analysis of the rolling tire in Abaqus. Fatigue life calculations were performed in the rubber fatigue solver Endurica CL. Effects of inflation pressure, tire speed, and axle load on the fatigue life of the belt package under strain-crystallizing and non-crystallizing conditions of the belt compound are discussed. Specifically, the results show the belt edges to be critical regarding crack nucleation.

Department(s)

Mining and Nuclear Engineering

Comments

The author(s) disclosed receipt of the following financial support for the research, authorship and/or publication of this article: The financial support of the Robert H. Quenon Endowed Chair and funds from the Missouri University of Science and Technology/Saudi Mining Polytechnic project for this study are gratefully acknowledged.

Keywords and Phrases

ABAQUS; Coal mines; Cracks; Elasticity; Finite element method; Mine trucks; Rubber; Strain; Structural design; Tires; Analysis techniques; Critical planes; Enhanced finite elements; Inflation pressures; Mining trucks; Reinforcing fillers; Straininduced crystallization; Surface coal mines; Fatigue of materials; Belt package; Critical plane analysis; Fatigue life; Mining truck tire; Strain-induced crystallization

International Standard Serial Number (ISSN)

0954-4070; 2041-2991

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2019 SAGE Publications, All rights reserved.

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