20.500.12556/DKUM-26263 Numerična analiza postopka kovanja ohišja krmilnega mehanizma Computational analysis of the forging process of steering mechanisms' case V prispevku je predstavljena numerična analiza postopka kovanja ohišja krmilnega mehanizma, ki je sestavni del vsakega avtomobila. Analiziran izdelek se kuje s postopkom vročega utopnega kovanja z brado. V članku je opisana priprava numeričnih modelov, ki so bili uporabljeni v računalniških simulacijah. Opis zajema sestavo numeričnih modelov, materialne parametre in robne pogoje. Analiza postopka kovanja je bila izvedena s pomočjo računalniških simulacij po metodi končnih elementov s programskim paketom Deform 3D, ki uporablja eksplicitno iteracijsko metodo za reševanje vodilnih enačb, kar znatno skrajša potrebni računski čas. S pomočjo parametričnih simulacij je bila določena optimalna geometrija surovca, ki v fazi kovanja v celoti zapolni gravuro orodja. Rezultati analiz kažejo, da je mogoče z uporabo računalniških simulacij postopka kovanja prihraniti precej materiala. Prav tako je mogoče dokaj dobro oceniti potrebno preoblikovalno silo. The paper describes computational analysis of the forging process of steering mechanisms' case, which is used in almost every motor vehicle. The analyzed component is manufactured with the hot drop forging process. Preparation of numerical models used in computer simulations is described. Description includes the structure of numerical models, material parameters and boundary conditions as well. The forging process analysis was performed with computer simulations using the computer code Deform 3D, which is based on the finite element method (FEM). This computer code efficiently uses the explicit iteration method for solving the governing equations, which considerably shortens the computational time. The conducted parametric simulations allowed for determination of optimal geometry of the raw product, which completely fills the die impression during the forging phase. Results of the analysis show that by using computer simulations of the forging process it is possible to save a significant amount of raw material. It is also possible to provide very good estimate of the maximum forming force. kovanje krmilni mehanizem utopno kovanje numerično modeliranje forging steering mechanism drop forging numerical modeling true false false Slovenski jezik Angleški jezik Neznano 2012-05-31 12:20:21 2012-05-31 12:20:21 2022-04-15 03:41:14 2024-01-03 03:23:30 2008 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.73:621-22 12630294 URN:SI:UM:DK:VWBLAS3U http://www.drustvozamehaniko.si/zbornik/ZbornikKD2008.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=35222 Fakulteta za strojništvo 0 0 0