Dynamic characteristics analysis of a circular vibrating screen

Wang, Yuanchen; Wang, Zhenqian; Zhang, Min; Xu, Bo; Song, Yunhao

doi:10.21595/vp.2022.23025

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…The analysis of structural strength and rigidity is crucial in the structural optimization design process for large vibrating screens. Various methodologies, including harmonic response, modal analysis, and dynamics, have been employed by domestic and international scholars to investigate structural stress conditions [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis and optimization design of large vibrating screen based on equivalent static load method

Sun,

Sui,

Zheng

et al. 2024

Eng. Res. Express

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Vibrating screens have wide applications in various industries, ranging from agriculture to coal mining. In recent years, improvement in production have put forward higher requirements on the efficiency of vibrating screens. However, these large screens are prone to fatigue damage, particularly crack formation, over time. The emergence of substantial dynamic inertial forces can be attributed to the considerable body mass of a large vibrating screen. This study analyzed the structural strength of the HZXZ200x300 large vibrating screen, employing finite element simulation to identify the maximum equivalent stress and primary stress distribution. The main frame model of the vibrating screen box was constructed by integrating the equivalent static load and submodule methods. The model transitioned from dynamic response to static optimization under equivalent static and dynamic loads, significantly reducing calculation scale and enhancing optimization efficiency. Equivalent static sub-models were employed for topology optimization, determining the optimal structure for material performance distribution. This process yielded an optimal conceptual model for reconstructing the actual model. The structural strength was further improved by comparing three-dimensional and dynamic local stress relationships post-topological optimization, followed by reinforcing the vibrating screen structure and introducing reinforced bars for increased stability. The study showed that lightweight topology optimization significantly decreased the stress levels and improved the fatigue durability of beams. Local strengthening, accomplished via topology optimization, effectively reduced the maximum equivalent stress to 76.487 MPa, a decrease of 46.8%. The vibrating screen mass also decreased by 225 kg, a reduction of 14.9%. In summary, this study employed structural analysis, topology optimization, and local reinforcement to mitigate stress levels, enhance the fatigue life of a vibrating screen, and reduce its weight. This study offers an effective solution to the dynamic optimization challenges of complex structures.

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Section: Introductionmentioning

confidence: 99%

Finite element analysis and optimization design of large vibrating screen based on equivalent static load method

Sun,

Sui,

Zheng

et al. 2024

Eng. Res. Express

View full text Add to dashboard Cite

show abstract

Determination of kinematic and dynamic characteristics of a reversible vibratory conveyor with an electromagnetic drive

Gurskyi,

Korendiy,

Krot

et al. 2024

Vib. proced.

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The paper considers the design parameters that must be provided during the practical implementation of small-sized reversible vibratory conveyors with an electromagnetic drive. The proposed conveyor is developed on the basis of a classical two-mass oscillatory system. Two oscillating masses are connected by symmetrically assembled round-shaped rods. In order to avoid angular (torsional) oscillations of the vibratory conveyor, the geometrical centers of mass and stiffness of the spring system are aligned at the same point. The analysis of kinematic characteristics is performed by means of numerical solving of the system of nonlinear Lagrange-Maxwell differential equations. The influence of the phase shift angle between the electromagnetic excitation of horizontal and vertical oscillations on the trajectories of the mass center of the conveying member is analyzed. The first two frequencies and forms of natural oscillations of the vibratory conveyor are determined for estimating its dynamic characteristics. The novelty of this study lies in the development of a new design of a vibratory conveyor with a controllable independent electromagnetic drive that provides the conveying reversibility and efficiency.

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Dynamic characteristics analysis of a circular vibrating screen

Cited by 2 publications

References 6 publications

Finite element analysis and optimization design of large vibrating screen based on equivalent static load method

Finite element analysis and optimization design of large vibrating screen based on equivalent static load method

Determination of kinematic and dynamic characteristics of a reversible vibratory conveyor with an electromagnetic drive

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