QUSIMAV – Quantitative Simulation Method for the Prediction of Abrasive Wear

该研究项目的主要目标是开发一种标准化方法，用于使用离散元法（DEM）对物料搬运和建筑机械领域的滑动和冲击磨损进行有效的定量预测。该模拟方法首次允许考虑，-复杂的部件和设备几何形状，-显著影响散装材料的流动和流动行为并因此影响散装材料-部件相互作用的不同散装材料性质，-现实的操作边界条件（质量流率，机器部件的运动）该研究项目的结果将为预测散装材料处理和加工行业的磨损提供大量的附加值，并将使经济和资源高效使用高质量的耐磨保护材料。由于现有的DEM磨损模型在磨损评估中存在局限性，因此有必要对其进行进一步发展，并制定适当的验证和校准策略，以确保结果的真实性。对于校准，应在磨损试验台的帮助下，独立考虑滑动和冲击磨损情况下，确定特定磨损防护材料的块体材料相互作用引起的真实的质量损失。实验数据将与理想化的DEM模拟结果进行比较。为了校准滑动磨损，将使用磨损试验台（已根据上诉人的上诉获得资金和建造）。然而，为了校准冲击磨损，开发和建造一个新的试验台是必要的。最后，为了验证，在改进的冲击磨损试验台上进行了实验，在该实验台中，散料流作用于具有复杂几何形状的部件上。因此，两种磨损类型，磨料滑动和冲击磨损同时发生。校准程序的功能将通过与使用先前校准的磨损模型参数的这些验证测试的类似DEM模拟进行比较来验证。

The main objective of the research project is the development of a standardized method for the validated quantitative prediction of sliding and impact wear in the field of material handling and construction machines using the Discrete Element Method (DEM). The simulation approach allows for the first time the consideration of,- complex component and plant geometries,- different bulk material properties that significantly influence the flow and flow behavior of the bulk material and thus the bulk material-component interaction,- realistic operative boundary conditions (mass flow rates, motion of machine components).The results of the research project would provide a great deal of added value for predicting wear in the bulk material handling and processing industry and would allow economic and resource efficient use of high quality wear protection materials. Since the existing wear models in DEM have limitations in the assessment of wear, it is necessary to further develop them and develop appropriate validation and calibration strategies to ensure realistic results.For calibration, the real mass loss of specific wear protection materials resulting from the bulk material interaction should be determined with the help of wear test stands which independently consider sliding and impact wear cases. The experimental data will be compared with the results of the idealized DEM simulations.To calibrate the sliding wear, a wear test rig (already been financed and constructed from appellants' appeals) will be used. For the calibration of the impact wear, however, the development and the construction of a new test stand are necessary.Finally, for validation, experiments are carried out on the modified impact wear test stand, in which a flow of bulk material acts on a component with complex geometry. Hence, both wear types, abrasive sliding and impact wear occur at the same time. The functionality of the calibration procedure is to be validated by comparison with analogous DEM simulations of these validation tests using the previously calibrated wear model parameters.