ArticleScientific reports2024
Fatigue life prediction of cracked cross beam of mining linear vibrating screen under cyclic load.
Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Operational characteristics and blade fatigue life analysis of a novel variable-pitch wind turbine under natural wind conditions.Scientific reports · 2025Article
- Effect of particle size distribution on screening efficiency of vibrating screen.Scientific reports · 2025Article
- Nonlinear degradation modeling and remaining useful life prediction for electric drive system with multiple failure modes.Scientific reports · 2025Article
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Authors and funding
3 authors.
Funding
Abstract
The cross beam of a mining linear vibrating screen is prone to cracking under long-term cyclic load. In order to accurately predict the fatigue life of the cracked cross beam, a coupled analysis method of vibration and crack propagation is proposed. A 2D dynamic model of the vibrating screen is established based on the finite element method, which is verified by the vibration test platform. The cracked Euler beam element is used to model the cracked cross beam. The effects of crack depth, amplitude of excitation force, frequency of excitation force, and crack location on the crack-tip stress intensity factor of the cracked cross beam are investigated in detail. In addition, an iterative method is proposed on the basis of the Paris model. The residual service life of the beam under different frequencies of excitation force, amplitudes of excitation force, spring stiffness, crack positions, and degrees of stiffness imbalance are discussed. The results demonstrate that the fatigue life of the beam increases as the frequency of excitation force and spring stiffness increase. The increase of the amplitude of excitation force and spring permanent deformation reduces the fatigue life. The conclusion obtained provide some theoretical guidance for the design and routine maintenance of mining linear vibrating screens.
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