{"?xml":{"@version":"1.0"},"edm:RDF":{"@xmlns:dc":"http://purl.org/dc/elements/1.1/","@xmlns:edm":"http://www.europeana.eu/schemas/edm/","@xmlns:wgs84_pos":"http://www.w3.org/2003/01/geo/wgs84_pos","@xmlns:foaf":"http://xmlns.com/foaf/0.1/","@xmlns:rdaGr2":"http://rdvocab.info/ElementsGr2","@xmlns:oai":"http://www.openarchives.org/OAI/2.0/","@xmlns:owl":"http://www.w3.org/2002/07/owl#","@xmlns:rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","@xmlns:ore":"http://www.openarchives.org/ore/terms/","@xmlns:skos":"http://www.w3.org/2004/02/skos/core#","@xmlns:dcterms":"http://purl.org/dc/terms/","edm:WebResource":[{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-8P0MOQ4S/81a95195-99fc-4182-b8d7-084c48a3136e/HTML","dcterms:extent":"21 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-8P0MOQ4S/3f9942bb-4c8f-4466-99fe-34683d3eb8ba/PDF","dcterms:extent":"1316 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-8P0MOQ4S/76157d10-f72f-4046-90f5-73ba644f7337/TEXT","dcterms:extent":"17 KB"}],"edm:TimeSpan":{"@rdf:about":"1999-2025","edm:begin":{"@xml:lang":"en","#text":"1999"},"edm:end":{"@xml:lang":"en","#text":"2025"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:DOC-8P0MOQ4S","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:spr-6QOUKQ9A"},{"@xml:lang":"sl","#text":"Strojniški vestnik"}],"dcterms:issued":"2008","dc:creator":["Czyżewski, Piotr","Kocańda, Andrzej"],"dc:format":[{"@xml:lang":"sl","#text":"številka:4"},{"@xml:lang":"sl","#text":"letnik:54"},{"@xml:lang":"sl","#text":"6 strani"},{"@xml:lang":"sl","#text":"str. 274-279"}],"dc:identifier":["ISSN:0039-2480","COBISSID:10529819","URN:URN:NBN:SI:doc-8P0MOQ4S"],"dc:language":"en","dc:publisher":[{"@xml:lang":"sl","#text":"Association of Mechanical Engineers and Technicians of Slovenia et al."},{"@xml:lang":"sl","#text":"Zveza strojnih inženirjev in tehnikov Slovenije et al."}],"dc:subject":[{"@xml:lang":"sl","#text":"kovanje"},{"@xml:lang":"sl","#text":"modeli"},{"@xml:lang":"sl","#text":"orodja"},{"@xml:lang":"sl","#text":"sile"},{"@rdf:resource":"http://www.wikidata.org/entity/Q241631"}],"dcterms:temporal":{"@rdf:resource":"1999-2025"},"dc:title":{"@xml:lang":"sl","#text":"Experimental and numerical analysis of side forces in a forging die| Eksperimentalna in numerična analiza bočnih sil v kovaškem orodju|"},"dc:description":[{"@xml:lang":"sl","#text":"Though hot forging dies are subjected mostly to forces acting in the direction of moving tool/slider, some side forces are also developed in the diecavity according to the flow of material in various directions. These forces would be relatively high especially in the cases of non-axisymmetrical or extended forgings what could result in an offset of upper and lower dies causing geometrical inaccuracy of the forging. This paper presents two ways of determining side forces by means of numerical and physical modeling. Two industrial forging processes for the bracket lever and the valve lever were chosen for the analysis. As the result, values and directions of side forces from the beginning up to the end of deformation stage were obtained. Hence some changes in die design or process stages which would minimize the influence of side forces on geometrical inaccuracy of forgings could be introduced. As an example, some ways to minimize the side forces by changing the inclination of parting surface (bracket lever forging) or changing the positioning of perform (valve lever forging) were shown"},{"@xml:lang":"sl","#text":"Čeprav so orodja za vroče kovanje obremenjena predvsem s silami, ki delujejo vsmeri gibanja orodja/drsnika, v orodni votlini nastanejo tudi bočne sile glede na tok materiala v različnih smereh. Te sile so lahko razmeroma velike, se posebej v primerih kovanja nesimetričnih ali po prerezu neenakomernih izkovkov, kar povzroči zamik zgornjega in spodnjega dela orodja in s tem geometrijske napake na izkovku. V prispevku sta predstavljena dva načina za določevanje bočnih sil s pomočjo numeričnega in fizičnega modeliranja. Obravnavana sta dva industrijska postopka in sicer za izdelavo zapiralne ročice ter vzvoda ventila. Pridobljene so bile vrednosti in smeri bočnih sil od začetka do zaključka postopka deformacije. Na podlagi teh rezultatov je bilo mogoče uvesti spremembe v konstrukciji orodja in izbiri tehnoloških parametrov, z namenom zmanjšanja vpliva bočnih sil na geometrijske napake izkovkov. Kot primer sta prikazana načina, kako je mogoče zmanjšati bočne sile s spreminjanjem nagiba delilne ravnine (kovanje zapiralne ročice) in s spreminjanjem začetnega položaja surovca v orodju (kovanje vzvoda ventila)"}],"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"ore:Aggregation":{"@rdf:about":"http://www.dlib.si/?URN=URN:NBN:SI:DOC-8P0MOQ4S","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-8P0MOQ4S"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-8P0MOQ4S/3f9942bb-4c8f-4466-99fe-34683d3eb8ba/PDF"},"edm:rights":{"@rdf:resource":"http://rightsstatements.org/vocab/InC/1.0/"},"edm:provider":"Slovenian National E-content Aggregator","edm:intermediateProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:dataProvider":{"@xml:lang":"sl","#text":"Univerza v Ljubljani, Fakulteta za strojništvo"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:DOC-8P0MOQ4S/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-8P0MOQ4S"}}}}