Abstract
Taking sands as the research object, the influences of changes in particle sizes on the simulation results were analyzed in the simulation test based on DEM (Discrete Element Method) using tests and comparative simulation methods, so as to study the influences of particle changes on simulation results in the simulation process using DEM. According to the simulation using particles of varied sizes, the angle of repose is changed marginally with minor errors in the test of the angle of repose. Also, particle size has insignificant influence on the simulation results in the test of the angle of repose. That is to say, the simulation test of the angle of repose is less sensitive to the particle size. However, particle size exerts a remarkable influence on the simulation result in the vane shear test. Specifically, when the particle size is changed, then the maximum torque of the vane will be significantly fluctuated, indicating that the vane shear test is highly sensitive to the particle size. When the magnification factor m ≤ 4, the variation trend of torque will be consistent with reality. In that case, the particle magnification should be less than 4 times.
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Tan, X., Gao, J., Hu, C., Song, X., Zhang, M., Zheng, P. (2023). Research on the Influence of Changes in Particle Sizes on Simulation Results in the Simulation Test Based on the Discrete Element Method. In: Zhang, H., Feng, G., Wang, H., Gu, F., Sinha, J.K. (eds) Proceedings of IncoME-VI and TEPEN 2021. Mechanisms and Machine Science, vol 117. Springer, Cham. https://doi.org/10.1007/978-3-030-99075-6_8
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DOI: https://doi.org/10.1007/978-3-030-99075-6_8
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