TY-JUR A2 - 周，元鑫奥申，昌普·艾 - 李，永翔奥旭，Xuemeng PY - 2021DA - 2021/04/23 - 2021/04/23 - 2021/04/23 Ti校准粉末螺杆传送SP - 6671511 VL - 6671511 VL -2021 AB - 为了获得粉末螺杆输送的仿真过程中的准确接触参数，本文以小麦粉为例，基于离散元素JKR（Johnson-Kendall-Roberts）接触型号，直接校准模拟接触参数在响应小麦粉质量流量的螺杆输送过程中。首先，校准小麦粉颗粒的模拟密度，小麦粉颗粒的模拟密度为1320kg / m。然后，Plackett-Burman实验用于筛选对质量流量的显着影响的参数：表面能JKR，小麦粉和小麦粉之间的静摩擦系数以及小麦粉和不锈钢之间的静摩擦系数。基于Box-Behnken实验建立和优化了质量流量和显着参数的二阶回归模型，并且获得了显着性参数的最佳组合：JKR为0.364;小麦粉的静摩擦系数为小麦粉为0.437;小麦粉与不锈钢静态摩擦系数为0.609。最后，校准参数用于模拟。通过比较模拟和实验的质量流速，两者的相对误差为1.37％。 The simulation and experiment flow rate values at different rotating speeds (60 r/min, 80 r/min, 100 r/min, 120 r/min, and 140 r/min) were further compared, and the errors were all within 3%. The method of directly calibrating the simulation contact parameters through the screw conveying process can improve the accuracy of screw conveying simulation, and providing a method and basis for powder contact parameters calibration and screw conveying simulation of wheat flour. SN - 2314-4904 UR - https://doi.org/10.1155/2021/6671511 DO - 10.1155/2021/6671511 JF - Journal of Engineering PB - Hindawi KW - ER -