finite elements method. multi-rifled tube. cold drawing. forming tool geometryNecpal, Martin, 1978- Numerical simulation of material plastic deformation using the drawing forming process of contoured internal surface tubes / aut. Martin Necpal, Erika Hodúlová, Maroš Martinkovič. -- 10.4028/www.scientific.net/KEM.841.54. -- 2-s2.0-85094161340. Hodúlová, Erika, 1978-. Martinkovič, Maroš, 1957- In: Key Engineering Materials. -- ISSN 1013-9826 International Conference on Material Engineering and Application.. -- Vol. 841, (2020), s. 54-58.