TY JOUR TI Computational and Experimental Evaluation of the Characteristics of Polymer Elements KW Polymer element KW automatic coupler draft gear KW finite element method KW force characteristic KW completeness coefficient KW energy intensity KW hyper-elastic material JO Proceedings of Petersburg Transport University AU Kravcov, S.A. AU Boldyrev, A.P. AU Lozbinev, F.Y. PY 2023 IS 20 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"