PT Journal AU Fomin, O Gerlici, J Lovska, A Gorbunov, M Kravchenko, K Prokopenko, P Hauser, V TI The Improved Hatch Cover Construction for Universal Open Box-type Wagon from the Strength and Durability Point of View SO Manufacturing Technology Journal PY 2019 BP 216 EP 221 VL 19 IS 2 DI 10.21062/ujep/272.2019/a/1213-2489/MT/19/2/216 DE open box-type cargo wagon; hatch cover; structural analysis; fatigue analysis AB Dynamic load of the improved hatch cover construction for universal open-box type wagon is researched, taking in to account the worse loading scheme - impact of 150 kg cargo from height of 3000 mm. In the case of improved hatch cover construction, dynamic load character reduction up to 50% can be reached, compare to conventional one. Hatch cover model of proposed construction for strength calculation was created. Strength calculation is done by finite-elements method in Cosmos Works software. Calculation of hatch cower durability, considering symmetrical and asymmetrical load cycle are carried out. In the proposed construction, areas with maximum equivalent stresses caused by usual operational load are defined. Results of conducted research can be useful for projection of new wagon generation with improved technical, economical and operational parameters. ER