Dynamic simulation and experimental study of the effect of one-dimensional vibration on the packing of wood powder particles--颗粒学报PARTICUOLOGY

Chen, X., He, F., Chen, F., & Dai, Y. (2024). Dynamic simulation and experimental study of the effect of one-dimensional vibration on the packing of wood powder particles. Particuology, 94, 294-304. https://doi.org/10.1016/j.partic.2024.08.013

Dynamic simulation and experimental study of the effect of one-dimensional vibration on the packing of wood powder particles

Xiaoneng Chen^a, Fuqiang He^a *, Fajiang Chen^b, Yuan Dai^a

a School of Mechanical Engineering, Guizhou University, Guiyang, 550025, China
b Guizhou Jingmu Building Materials Co., Guiyang, 550025, China

10.1016/j.partic.2024.08.013

Volume 94, November 2024, Pages 294-304

Volume 94

E-mail: hefq75@163.com

Highlights

• Experimental study of porosity changes in wood powder particle stacking structures under one-dimensional vibration.

• Experimental results are combined with numerical simulations to obtain surface energy parameters of wood powder particles.

• Analyzing microscopic properties of the stacking structure of wood powder particles under different vibration conditions.

• Combining experimental and dynamic simulation analysis to obtain optimal vibration conditions.

Abstract

In the industry of production of high-density fiberboards without adhesive, applying vibration to the particle packing system before pressing and molding is an effective way to improve the uniformity of particle packing and reduce porosity. In this work, physical experiments combined with numerical simulations are used to systematically investigate the packing structure behavior of wood powder particles under different vibration conditions. Macroscopic and microscopic properties such as porosity, coordination number, radial distribution function, and contacts are characterized and analyzed. The results indicate that when the vibration frequency is 72 Hz and the vibration amplitude is 1 mm, the porosity of wood powder particles closely packed is minimized. The results of the Discrete Element Method show that the distribution of the coordination number is approximately normal. As the vibration conditions change, the packing structure becomes tighter, but the main peak of the radial distribution function becomes blurred or even disappears. Vibration does not significantly change the type of contact in the packing structure. The conclusions can provide more comprehensive vibration conditions and microscopic theories for the uniform spreading of wood powder particles before pressing, ensuring that the finished panels have excellent mechanical and physical properties.

Graphical abstract

Keywords

Vibration; Wood powder particle; Dynamic simulation

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