Optimising Rice Straw Bale Quality Through Vibration-Assisted Compression

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Abstract
This study focuses on enhancing the comprehensive utilisation of rice straw by proposing a vibration-assisted compression technology, with the aim of resolving inherent issues in traditional baling, such as uneven compression and low density. This study designed a multi-point vibration-assisted compression test rig and established a vibration-enhanced compression mechanical model based on the physical properties of rice straw. By integrating discrete element method (DEM) simulations with bench testing, the optimal length-to-width ratio of 1:1 was identified for achieving superior compaction quality. A systematic analysis was conducted to evaluate the effects of vibration point configuration, frequency, and amplitude control on straw bale integrity. The results of the DEM simulations demonstrated that vibration-assisted compression significantly enhanced the compaction uniformity and stability of rice straw. The dimensional stability coefficient and pressure transmission rates of the straw bales reached 88.25% and 58.04%, respectively, validating the efficacy of the vibration-assisted compression technique. This study provides innovative concepts and theoretical foundations for optimising the design of straw baling and in-field collection equipment. It holds critical significance for advancing the resource-efficient utilisation of agricultural residues and promoting sustainable agricultural practices.
Funding Information
  • Key Research and Development Program of Heilongjiang Province of China (2023ZX05B03, 52475247, 52405294, TD2023E001, CARS-01)
  • National Natural Science Foundation of China (2023ZX05B03, 52475247, 52405294, TD2023E001, CARS-01)
  • Natural Science Foundation of Heilongjiang Province of China (2023ZX05B03, 52475247, 52405294, TD2023E001, CARS-01)
  • Program on Industrial Technology System of National Rice (CN) (2023ZX05B03, 52475247, 52405294, TD2023E001, CARS-01)

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