Dynamic Analysis and Optimization of the Coupling System of Vibrating Flip-Flow Screen and Material Group

Vibrating flip-flow screens (VFFSs) provide an effective solution for deeply screening moist and fine-grained minerals, and an accurate dynamic model of VFFSs is critical for its dynamic analysis and optimization, thereby improving the vibration stability and symmetry of VFFSs. In this paper, uniaxi...

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Bibliographic Details
Published in:Symmetry (Basel) 2024-07, Vol.16 (7), p.913
Main Authors: Gong, Sanpeng, Wang, Chenhao, Guo, Jialiang, Qiao, Ziqi, Zhao, Guofeng, Fan, Junkai, Xu, Ningning, Wang, Xinwen
Format: Article
Language:English
Subjects:
Coupling
coupling system
Deformation
Discrete element method
Dynamic models
dynamic optimization
Dynamic response
Energy
Genetic algorithms
Group dynamics
Heat treating
material group
Motion stability
nonlinear dynamic model
Optimization
Rubber
Shear stress
Simulation
Simulation models
Sorting algorithms
Springs (elastic)
Stress relaxation
vibrating flip-flow screen
Vibration analysis
Viscoelasticity
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Summary:Vibrating flip-flow screens (VFFSs) provide an effective solution for deeply screening moist and fine-grained minerals, and an accurate dynamic model of VFFSs is critical for its dynamic analysis and optimization, thereby improving the vibration stability and symmetry of VFFSs. In this paper, uniaxial tension, uniaxial compression, plane tension, and shear stress relaxation experiments were conducted on screen panel samples to illustrate that the third-order Ogden model and the generalized Maxwell model can accurately describe the hyperelasticity and viscoelasticity of screen panels. Then, the coupling method of finite element and discrete element was adopted to establish the simulation model of the screen panel and material group coupling system, and the dynamics of the coupling system under different loading conditions were explored. Finally, the dynamic model of the coupling system of VFFSs mass, screen panel, and material group was proposed, and the non-dominated sorting genetic algorithm II was applied to optimize the system’s dynamic response. The results reveal that the use of optimized shear springs can reduce the relative amplitude change rate of the main and floating screen frame by 44.30% while maintaining the periodic motion of the VFFSs under operation conditions, greatly enhancing the stability of the VFFSs system.
ISSN:2073-8994
2073-8994
DOI:10.3390/sym16070913