GROUND MODELING IN MACHINERY-GROUND INTERACTION SYSTEM AND PARAMETER DETERMINATION

The modelling of ground is often involved in the simulation of the machinery-ground interaction system. It is essential to study the ground model in more detail. In collaboration with the research in Germany, this paper presents a multi-body ground impact model and the method to determine its correlation parameters based on the analysis of existing ground models. The relationship between the model mass parameter and the energy conversion during impact process is discussed in details. The comparisons between the simulated and experimental results demonstrate that the proposed model and the corresponding parameter determination procedure are effective. This model is not only able to satisfactorily reproduce the dynamic ground deformation process but also simulate the interaction of the machinery-ground system.