Numerical simulation on resistance reduction of soil vibratory tillage using ALE equation

A method of soil vibration cutting resistance reduction was proposed for deep-loosing. Example for the compression soil of Zhejiang Longjing tea garden, a soil static cutting mechanics model and soil-cutting yield failure mode were studied in this paper. According to the interaction process of deep shovel-soil, the static cutting resistance changes of deep shovel was analyzed by 3D finite element model with algorithm of ALE. Furthermore, the influences of soil-cutting resistance on the vibration source type, the vibration frequency and vibration amplitude were also studied. As an example of a compaction soil in tea garden, the influences of soil resistance reduction with difference vibration cutting conditions was studied. It showed that the soil resistance reduced with the vibration frequency and amplitude increased, and soil cutting resistance was up to minimum. Case analysis?showed that with the vibration?frequency of?25?Hz, and the amplitude of 14 mm, the soil cutting resistance could be reduced by 22%. So, above-mentioned studies provided a design basis of soil cutting resistance reduction with vibration exciting, and parameter optimization of tillage impressed vibration source.