Deyi He
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Deyi He has a total of 2 co-authors. Here are the top co-authors by number of shared publications:
- Chusheng Liu
School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
1 shared publication - Sai Li
College of Mechanical and Electrical Engineering, Xuzhou College of Industrial Technology, Xuzhou 221140, China
1 shared publication
Latest Publications
- Open Access
- 29 June 2026
- Published by MDPI AG in Applied Sciences
- Vol. 16 (13) , 6483
Research on Nonlinear Dynamic Characteristics of Double-Deck Vibrating Flip-Flow Screen Based on Multi-Scale Method
The double-deck vibrating flip-flow screen (DDVFFS) resolves the limitation of the traditional single-deck vibrating flip-flow screen, which cannot perform multi-granularity screening. The nonlinear characteristics of the springs in the DDVFFS lead to issues of unstable vibration and significant deviations between the operational and design amplitudes. Consequently, a dynamic equation incorporating cubic nonlinear stiffness is formulated. These equations are initially expressed in physical coordinates and subsequently transformed into modal coordinates for analyzing the system’s nonlinear vibration characteristics under resonance using the multi-scale method. The study then explores the impact of system parameters on this nonlinear behavior. Increasing damping or reducing harmonic forces proves effective in mitigating multiple solutions and vibration jumps. The operational frequency is chosen within the distant single-valued resonance region to minimize the influence of nonlinear stiffness, ensuring stable operation of the DDVFFS. The calculated amplitudes are as follows: the main frame shows an amplitude of 7 mm, whereas the upper and lower floating frames display amplitudes of 9.4 mm and 5.6 mm, respectively. A 180° phase difference between the main frame and the upper or lower frames facilitates deck stretching and slackening.
- 29 June 2026
- Published by MDPI AG in Applied Sciences
- Vol. 16 (13) , 6483
Open AccessResearch on Nonlinear Dynamic Characteristics of Double-Deck Vibrating Flip-Flow Screen Based on Multi-Scale Method
The double-deck vibrating flip-flow screen (DDVFFS) resolves the limitation of the traditional single-deck vibrating flip-flow screen, which cannot perform multi-granularity screening. The nonlinear characteristics of the springs in the DDVFFS lead to issues of unstable vibration and significant deviations between the operational and design amplitudes. Consequently, a dynamic equation incorporating cubic nonlinear stiffness is formulated. These equations are initially expressed in physical coordinates and subsequently transformed into modal coordinates for analyzing the system’s nonlinear vibration characteristics under resonance using the multi-scale method. The study then explores the impact of system parameters on this nonlinear behavior. Increasing damping or reducing harmonic forces proves effective in mitigating multiple solutions and vibration jumps. The operational frequency is chosen within the distant single-valued resonance region to minimize the influence of nonlinear stiffness, ensuring stable operation of the DDVFFS. The calculated amplitudes are as follows: the main frame shows an amplitude of 7 mm, whereas the upper and lower floating frames display amplitudes of 9.4 mm and 5.6 mm, respectively. A 180° phase difference between the main frame and the upper or lower frames facilitates deck stretching and slackening.