Research on Analysis Method of Fatigue Strength for New Type Crushing Ripper Based on the Composite Load Spectrum

Abstract:

In view of the problem that new type crushing ripper installation of tamping equipment in circulation under the action of different load working multiple cases may occur structural fatigue damage, analysis of its force characteristic, establishment ripper rack compression bending component model, according to the working condition of the most unfavorable load combinations, using the allowable stress method to calculate structural fatigue strength; the combined effect of road load spectrum and vibrating load is also taken into consideration, then statics analysis and fatigue analysis of new type crushing ripper are calculated with the finite element analysis software Ansys Workbench. The results show that theoretical calculations are in accordance with the finite element analysis results, it evidences that the fatigue strength analysis method of crushing ripper is feasible and correct. It provides a reference for the anti-fatigue optimization design of new type crushing ripper, to guarantee its meet the operational requirements under of bad conditions.

• Periodical: Applied Mechanics and Materials (Volume 487)
• Pages: 378-384
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.487.378
• Online since: January 2014
• Authors: Feng Yi Lu*, Xin Xin Liu, Ge Ning Xu
• Keywords: Crushing Ripper, Cycle Action, Fatigue Strength, Finite Element Analysis (FEA), Multi-Conditions

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