Dynamic models of cultivator spring tine performance Oleg A. Polushkin, Vitalyi I. Ignatenko, Ivan V. Ignatenko, Ivan L. Vyalikov and Vitaliy P. Bogdanovich MATEC Web Conf., 226 (2018) 01016 Published online: 07 November 2018 DOI: 10.1051/matecconf/201822601016