Crack nucleation and propagation in microcrystalline-cellulose based granules subject to uniaxial and triaxial load

Jonsson, Hans; Öhman‐Mägi, Caroline; Alderborn, Göran; Isaksson, Per; Frenning, Göran

doi:10.1016/j.ijpharm.2018.12.064

Cited by 5 publications

(1 citation statement)

References 32 publications

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“…Besides, the pellet mill is in a dynamic rotation state and the pelleting process occurs in a relatively closed room; therefore, it is difficult to obtain data in the process of extrusion and pelleting, which brings an enormous challenge to dig into the mechanical behavior and pelleting mechanism of pellet feed. At present, both isostatic and closed die compressions have been carried out to study particle rearrangement and mechanical behavior 5 , 6 . Moreover, numerous studies have shown that it is meaningful and feasible to analyze the various mechanical behaviors and state change laws of the feed in the pellet mill by the single pellet press device 7 – 9 .…”

Section: Introductionmentioning

confidence: 99%

Calibration and verification of DEM parameters of wet-sticky feed raw materials

Peng

Zhang

et al. 2023

Sci Rep

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In order to improve the accuracy of the parameters needed in the discrete element method (DEM) simulation process of wet-sticky feed raw materials, the JKR contact model in DEM was used to calibrate and verify the physical parameters of wet-sticky feed raw materials. Firstly, the parameters that have a significant effect on the angle of repose were screened using a Plackett–Burman design, and the screened parameters were: MM rolling friction coefficient, MM static friction coefficient, and JKR surface energy. Then, the three screened parameters were selected as the influencing factors and the accumulation angle of repose was selected as evaluating indicator; thus, the performance optimization experiments were carried out with the quadratic orthogonal rotation design. Taking the experimentally measured angle of repose value of 54.25°as the target value, the significance parameters were optimized, and the optimal combination was obtained : MM rolling friction factor was 0.21, MM static friction factor was 0.51, and JKR surface energy was 0.65. Finally, the angle of repose and SPP tests were compared under the calibrated parameters. The results showed that the relative error of experimental and simulated tests in angle of repose was 0.57%, and the compression displacement and compression ratio of the experimental and simulated tests in SPP were 1.01% and 0.95%, respectively, which improved the reliability of the simulated results. The research findings provide a reference basis for simulation study and optimal design of related equipment for feed raw materials.

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