supported by the National Natural Science Foundation of China (Grant No 50175045);National High Technology Research and Development Program of China (‘863’ Project) (Grant No 2010AA101401-3);the scientific and technological development plan of Jilin Province, China (Grant No 20050539)
Past researches have shown that the non-smooth body surfaces of soil burrowing animals help to reduce soil resistance. In this research, this concept of bionic non-smooth surface was applied to disc ploughs and an exp...