{"?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-VOEUD4MW/1ecc058d-b7c1-4711-b201-8725f596a73f/HTML","dcterms:extent":"22 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-VOEUD4MW/5894366b-23ac-4de7-a7ac-49168d42ae40/PDF","dcterms:extent":"704 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-VOEUD4MW/da1bad0f-bc3a-4b67-97b7-d5437f459c8b/TEXT","dcterms:extent":"19 KB"}],"edm:TimeSpan":{"@rdf:about":"2000-2024","edm:begin":{"@xml:lang":"en","#text":"2000"},"edm:end":{"@xml:lang":"en","#text":"2024"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:DOC-VOEUD4MW","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/urn:nbn:si:spr-ihg6vo21"},{"@xml:lang":"sl","#text":"Materiali in tehnologije"}],"dcterms:issued":"2012","dc:creator":["Borković, Predrag","Leskovšek, Vojteh","Malešević, Milan","Podgornik, Bojan","Šuštaršič, Borivoj","Žužek, Borut"],"dc:format":[{"@xml:lang":"sl","#text":"številka:4"},{"@xml:lang":"sl","#text":"letnik:46"},{"@xml:lang":"sl","#text":"str. 345-349"}],"dc:identifier":["ISSN:1580-2949","COBISSID:927658","URN:URN:NBN:SI:doc-VOEUD4MW"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"dc:subject":[{"@xml:lang":"sl","#text":"doba trajanja"},{"@xml:lang":"en","#text":"fatigue life"},{"@xml:lang":"en","#text":"FEM simulation"},{"@xml:lang":"en","#text":"leaf spring"},{"@xml:lang":"sl","#text":"listnate vzmeti"},{"@xml:lang":"sl","#text":"MKE-simulacije"},{"@xml:lang":"en","#text":"spring steel"},{"@xml:lang":"sl","#text":"utrujanje materialov"},{"@xml:lang":"sl","#text":"vzmetno jeklo"},{"@rdf:resource":"http://www.wikidata.org/entity/Q773544"}],"dcterms:temporal":{"@rdf:resource":"2000-2024"},"dc:title":{"@xml:lang":"sl","#text":"Fatigue-life behaviour and a lifetime assessment of a double-leaf spring using FEM-based software| Utrujanje in ocena dobe trajanja dvolistnatih vzmeti z uporabo MKE-orodja|"},"dc:description":[{"@xml:lang":"sl","#text":"A lifetime assessment of any component by performing classical fatigue tests on real geometry is a very expensive and time-consuming task. For this reason, many efforts have been made to produce a computer software which will be able to replace this conventional fatigue testing. Although there is some dissimilarity between these two testing methods, we are free to use such a computer tool to shorten the testing time. The Finite Element Method (FEM) is one of the most frequently used methods for component designing, as well as for fatigue assessment. This assessment includes the stresses, the loads and the strength behavior of the material component. As the input values for the material properties, S/N curves were defined on the basis of the test results. The tensile and fatigue tests on the notched, as well as on the unnotched specimens under compression-tension loading were carried out in order to obtain the static and dynamic (S/N curves) properties of the investigated spring steel (51CrV4). Two groups of specimens were prepared: the longitudinal and perpendicular specimens relative to the rolling direction, both with two different heat-treatments (tempering temperatures). The results of the performed investigation showed a clear difference between the fatigue strengths of the specimens with two outmost segregation orientations and two different tempering temperatures. In addition, other influences, such as the residual stresses due to shoot peening and machining, surface roughness and metallurgical variables, can affect the fatigue strength of a material. All these effects can be taken into account by using the FEM-based simulations"},{"@xml:lang":"sl","#text":"Ocenjevanje dobe trajanja komponent pri izvajanju klasičnega preizkusa utrujanja realne geometrije je zelo drag in dolgotrajen postopek. Zaradi tega je bil vložen velik napor, da bi pridobili računalniško podprto orodje, ki bi bilo sposobno zmanjšati število konvencionalnih preizkusov utrujanja. Čeprav realno lahko pričakujemo, da obstajajo nekatere razlike med rezultati preizkušanja na realnih preizkušancih in tistimi, dobljenimi z računalniško podprtim orodjem, je prednost slednjega nedvomna, saj močno skrajša čas do pridobitve dokaj uporabnih podatkov. Metode končnih elementov (MKE) so med najbolj uporabnimi za načrtovanje komponent tudi pri oceni vpliva utrujanja nanje za neko izbrano realno geometrijo. Ta ocena je sestavljena iz trdnostnih, obremenitvenih in napetostnih značilnosti materiala oz. komponent. Pri vzorcih iz izbranega materiala (vzmetno jeklo 51CrV4) smo določili njegovo trdoto ter statične (natezno trdnost) in dinamične (S/N-krivulje) lastnosti. Preizkusi utrujanja oz. določevanje S/N-krivulj je potekalo na zarezanih in nezarezanih vzorcih v natezno-tlačnem načinu obremenitve. Pripravljeni sta bili dve skupini vzorcev: v prečni in vzdolžni smeri glede na smer valjanja (smer izcejanja), obe skupini pa sta bili še dodatno različno toplotno obdelani (pri dveh različnih temperaturah popuščanja). Rezultati preiskav kažejo jasno razliko med dinamično trajno trdnostjo vzorcev za izbrani orientaciji izcej in izbrani temperaturi popuščanja. Poleg tega moramo upoštevati, da tudi drugi vplivi (metalurgija izdelave jekla, zaostale napetosti zaradi peskanja in mehanske obdelave, hrapavost površine itd.) lahko vplivajo na dinamično trajno trdnost materiala. Vsi navedeni vplivi se lahko upoštevajo pri uporabi MKE-orodja"}],"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-VOEUD4MW","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-VOEUD4MW"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-VOEUD4MW/5894366b-23ac-4de7-a7ac-49168d42ae40/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":"Inštitut za kovinske materiale in tehnologije"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:DOC-VOEUD4MW/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-VOEUD4MW"}}}}