Coupling Analysis and Experimental Research of Discrete Element and Multibody Dynamics for Deep Loosening

摘要

Discrete element simulation of deep loose is an important method to study the characteristics of deep loose. In the traditional discrete element simulation, there are errors in the simulation results caused by the rigid soil tank wall squeezing the soil. In this paper, a simple sample is designed and processed according to the shovel handle structure of the subsoiling shovel. The multi-body dynamics software RECURDYN is coupled with the discrete element software EDEM to simulate the subsoiling sample. The coupling simulation results are compared with EDEM simulation alone, and the stress state of soil particles in the two simulation models is analyzed, and the correctness of the coupling simulation model is verified by indoor soil tank test. The results show that the force of the sample in the coupling simulation is closer to the force of the sample in the soil trench experiment, so the coupling simulation can more accurately simulate the deep loosening process. This paper can provide theoretical guidance and data support for the simulation research of Deep loosening.