Calculation of the movement trajectory of the grain mass in the field stripper Andrey Matrosov, Daria Nizhnik, Ivan Panfilov, Viktor Pakhomov, Irina Serebryanaya, Arkady Soloviev and Dmitriy Rudoy E3S Web Conf., 210 (2020) 08015 Published online: 04 December 2020 DOI: 10.1051/e3sconf/202021008015