Fundamental Studies on the Soil Cutting by Straight Wire Blade (Part 1)

Focusing on the Occurrence Pattern of Slip-line

Abstract

The indoor experiments have been undertaken placing practical emphasis on the newly-proposed mechanism of soil cutting by straight wire blade. In this analysis, the occurrence pattern of slip-line and the related force characteristics were focused for further discussions. Up to 2mm of wire diameter, the initial maximum holizontal force did not show clear relationship with wire diameter under less soil hardness condition. The vertical force takes only 4.0 to 12.6N which is tantamount to the specific proportion from 1/3 to 1/10 of it for holizontal force. The occurrence pattern of slip-line heavily relies on bulk density of soil, when keeping wire diameter and cutting velocity constant. Reproducibility of slip-line is also convinced.