Title :
Research on the continuum/discontinuum multiscale analytical system of the interaction between rigid wheel and lunar soil
Author :
Zhang Rui ; Chen Bin ; Li Jianqiao
Author_Institution :
Key Lab. of Bionic Eng., Jilin Univ., Changchun, China
Abstract :
The continuum/discontinuum multiscale computations have great advantages in the large wheel/soil interaction simulations. Based on DEM software PFC2Dreg, the continuum/discontinuum multiscale analytical system of the interaction between rigid wheel and lunar soil by coupling discrete elements and matrix module was established. In the multiscale system, Bulk material particles on the surface being cut by the rigid wheel were simulated by discrete elements, and the part in the deep layer being produced elastic deformation was simulated by matrix module. Through one example of the interaction between rigid wheel and lunar soil using the multiscale model and the DEM model, and comparing the simulation results with the soil-bin test results, the multiscale model not only satisfied the computation accuracy, but also had the much higher computation efficiency.
Keywords :
astronomy computing; lunar rocks; lunar surface; planetary rovers; DEM software; PFC2D; continuum-discontinuum multiscale computation; distinct element method; elastic deformation; large wheel-soil interaction; lunar rover; lunar soil; lunar surface; Analytical models; Assembly; Computational modeling; Deformable models; Gravity; Laboratories; Microscopy; Moon; Soil; Wheels;
Conference_Titel :
Granular Computing, 2009, GRC '09. IEEE International Conference on
Conference_Location :
Nanchang
Print_ISBN :
978-1-4244-4830-2
DOI :
10.1109/GRC.2009.5255019