Analysis on the Resistive Forces acting the Bucket in the Scooping Task of Piled Fragment Rocks by Use of Distinct

摘要

In order to au tomate the scooping task of piled fragment rocks by using thewheel loader or Load-Haul-Dump, it is desirable that the resistive forces actingon the bucket are obtained before the scooping task is performed. However, theresistive forces acting on the bucket are not made clear yet because the changesin shape of the rock pile due to the movement of the bucket are unknown. In thispaper, the changes in shape of the rock pile due to the movement ofthe bucketwere simulated by use of DEM (Distinct Element Method), and the resistiveforces acting on the bucket were calculated. Through the numerical simulation,the changes in shape of the rock pile due to the movement of the bucket weremade clear. Furthermore, by comparing the experimental results and simulatedresults, it was found that the agreement was almost satisfactory. Therefore, itwas confirmed that DEM simulation was useful to estimate the resistive forcesacting on the bucket.