20.500.12556/RUL-112816 Numerično napovedovanje oblike brizganih plastičnih izdelkov po zahtevnem izmetavanju Numerical prediction of injection molded product's shape after complex ejection Razvit je pristop numerične simulacije brizganja plastike, pri katerem je cilj napovedati končno obliko izdelka, ki je odvisna tudi od faze izmetavanja. Modeliranje faz zapolnjevanja, naknadnega tlaka in ohlajanja je izvedeno kot problem računalniške dinamike tekočin. Zaostale napetosti v izdelku so modelirane kot problem mehanike trdnin z uporabo metode končnih elementov. Model vključuje reologijo trdnega polietilena visoke gostote. Simuliran je kontaktni problem izmetavanja in končno ohlajanje na sobno temperaturo. A numerical simulation approach for plastics injection molding is developed where the goal is to predict the final shape of a product which is also affected by the ejection stage. The modeling of the filling, packing and cooling stages is conducted in the scope of computational fluid dynamics. The residual stresses in the part are predicted in the scope of solid mechanics using the finite element method. The model includes the rheology of solid high density polyethylene. The ejection contact problem and cooling to room temperature are simulated. brizganje plastike izmetavanje zaostale napetosti skrček napoved oblike numerično modeliranje injection molding ejection residual stresses shrinkage shape prediction numerical modeling true false false Slovenski jezik Angleški jezik Doktorsko delo/naloga 2019-11-14 10:09:41 2019-11-14 10:09:44 2023-10-24 09:27:33 0000-00-00 00:00:00 2019 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 219658 3005.pdf 3005.pdf 1 6F024279E85A666E051650FF01356EA7 c00b457f99a91169a47b21d3c17278b0b5ca756e2b263d9e0429bdf8e2785fe6 f6f21761-a1b7-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=124759 Fakulteta za strojništvo 0 0 0