第三部門：材料・複雑現象の力学（A)

[S03A-05] Efficient Simulator of Ground Leveling with a Bulldozer: Toward Real-time Feedback and Automatic Operation

*Takashi Matsushima¹, Wataru Tokunaga², Takuo Muroyama², Kazuya Kikawada² (1. University of Tsukuba, 2. Hazama Ando Corporation)

Keywords:ground leveling, bulldozer, numerical modeling

We develop an efficient simulator of ground leveling operation with a bulldozer. In the simulator, soil mound is described by a horizontal 2D mesh having the information of soil column height. The formation of the shear plane due to the motion of a bulldozer blade is assumed in the soil columns in front of the blade, and the soil mass above the shear plane is moved to the neighboring columns such that the mass conservation holds. The subsequent mechanism of slope failure and flow is modeled using a diffusion equation. Such simple modeling results in a very efficient program to reproduce the complicated soil behavior in ground leveling operation. The performance of the simulator is successively demonstrated by comparing it to field experiments.