Dynamic Modeling and Parameters Optimization of Large Vibrating Screen with Full Degree of Freedom

Dynamic characteristic and reliability of the vibrating screen are important indicators of large vibrating screen. Considering the influence of coupling motion of each degree of freedom, the dynamic model with six degrees of freedom (6 DOFs) of the vibrating screen is established based on the Lagran...

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Bibliographic Details
Published in:Shock and vibration 2019-01, Vol.2019 (2019), p.1-12
Main Authors: Qiu, Wenqiang, Jiang, Haishen, Wu, Jida, Yang, Xiaodong, Liu, C. Y.
Format: Article
Language:English
Subjects:
Degrees of freedom
Design parameters
Dynamic models
Efficiency
Elastic analysis
Elastic deformation
Finite element analysis
Finite element method
Genetic algorithms
Harmonic response
Mechanical engineering
Modal analysis
Modelling
Neural networks
Optimization
Plates (structural members)
Random vibration
Resonant frequencies
Rigid structures
Sizing screens
Useful life
Vibration analysis
Vibration mode
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Summary:Dynamic characteristic and reliability of the vibrating screen are important indicators of large vibrating screen. Considering the influence of coupling motion of each degree of freedom, the dynamic model with six degrees of freedom (6 DOFs) of the vibrating screen is established based on the Lagrange method, and modal parameters (natural frequencies and modes of vibration) of the rigid body are obtained. The finite element modal analysis and harmonic response analysis are carried out to analyze the elastic deformation of the structure. By using the parametric modeling method, beam position is defined as a variable, and an orthogonal experiment on design is performed. The BP neural network is used to model the relationship between beam position and maximal elastic deformation of the lateral plate. Further, the genetic algorithm is used to optimize the established neural network model, and the optimal design parameters are obtained.
ISSN:1070-9622
1875-9203
DOI:10.1155/2019/1915708