Fatigue Analysis and Life Prediction of Dumpers with Cumulative Fatigue Damage Approach and Finite Element Model

Abstract:

A fatigue damage model is developed for evaluating accumulative fatigue damage of dumpers. The loading spectrums acted on dumpers are created according to measured strain data in field. The finite element model is meshed for assessing and calculating stress distribution and strength characteristics of dumpers. The stress distribution and stress concentration factors of main components of dumper at different loading cases are numerically simulated. A fatigue damage model is developed for evaluating accumulative fatigue damage of dumpers. Fatigue damage indexes and service life are calculated by a modified Palmgren-Miner rule. The investigation shows that fatigue notch factor has a significant influence on the calculation of fatigue damage of dumpers.

• Periodical: Key Engineering Materials (Volumes 353-358)
• Pages: 909-912
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.353-358.909
• Online since: September 2007
• Authors: Shou Ju Li, Ying Xi Liu
• Keywords: Dumper, Fatigue Life Prediction, Finite Element Analysis (FEA), Loading Spectrum, Miner's Rule

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