{"?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-8EOKEB0C/a24591b9-db93-44bf-888a-7e736ef9d097/PDF","dcterms:extent":"2398 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-8EOKEB0C/1744ddca-41c0-4b20-a092-957e4183a3f1/TEXT","dcterms:extent":"24 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-8EOKEB0C","edm:isNextInSequence":{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:doc-EGPQGGRX"},"dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:spr-6QOUKQ9A"},{"@xml:lang":"sl","#text":"Strojniški vestnik"}],"dcterms:issued":"2015","dc:creator":["Guo, Hailin","Li, Jinquan","Zhou, Peipei"],"dc:format":[{"@xml:lang":"sl","#text":"številka:11"},{"@xml:lang":"sl","#text":"letnik:61"},{"@xml:lang":"sl","#text":"str. 680-686, SI 121"}],"dc:identifier":["ISSN:0039-2480","COBISSID:14323483","URN:URN:NBN:SI:doc-8EOKEB0C"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Zveza strojnih inženirjev in tehnikov Slovenije et al."},"dc:subject":[{"@xml:lang":"sl","#text":"adiabatni strižni pas"},{"@xml:lang":"sl","#text":"aluminijev bron"},{"@xml:lang":"sl","#text":"deformacije"},{"@xml:lang":"sl","#text":"dinamične mehanske lastnosti"},{"@xml:lang":"sl","#text":"hitrost obremenjevanja"},{"@xml:lang":"sl","#text":"konstitutivna relacija"}],"dcterms:temporal":{"@rdf:resource":"1999-2025"},"dc:title":{"@xml:lang":"sl","#text":"Experimental study and analysis of the dynamic mechanical properties of aluminium bronze|"},"dc:description":[{"@xml:lang":"sl","#text":"Accurate stress-strain curves of aluminium bronze (QAL9-4) under different temperatures and different strain rates were obtained using a dynamic compression test using a split Hopkinson pressure bar (SHPB). The dynamic mechanical properties of QAL9-4 were analysed. The Johnson-Cook (J-C) constitutive equation was obtained with experimental data fitting and the dynamic damage characteristics of QAL9-4 were studied using the mechanical response and microstructure analysis. The results show that QAL9-4 has an obvious strain-hardening effect and thermal softening effect, that the flow stress is not sensitive to the strain rate, and that the strain rate has almost no influence on the flow stress at room temperature and has a small effect at temperatures ranging from 300 °C to 700 °C. The fitting curves of the J-C constitutive model coincide well with the true stress-strain curves from the test"},{"@xml:lang":"sl","#text":"Aluminijev bron (QAL9-4) se uporablja na številnih področjih zaradi svoje visoke trdnosti, trdote, protiobrabne obstojnosti in dobre toplotne prevodnosti. Material je tudi primerna zamenjava za nerjavno jeklo, nikljeve zlitine itd. Obširne raziskave aluminijevega brona so bile do sedaj osredotočene predvsem na pripravo zlitine, preizkušanje zmogljivosti ter na vplive legirnih dodatkov in toplotne obdelave na mikrostrukturo in lastnosti. Konstitutivne relacije brona QAL9-4 pa so manj raziskane. V članku so zato preučene dinamične mehanske lastnosti in določena je Johnson-Cookova (J-C) konstitutivna enačba za QAL9-4 kot osnova za praktično uporabo tega materiala. Preučene so bile dinamične mehanske lastnosti in poškodbene lastnosti materiala QAL9-4. Prave krivulje odvisnosti deformacij od napetosti za aluminijev bron (QAL9-4) pri različnih temperaturah (v območju od 20 °C do 700 °C) in pri različnih hitrostih obremenjevanja (v območju od 2500 s-1 do 10000 s-1) so bile pridobljene v dinamičnem kompresijskem preizkusu z deljenim Hopkinsonovim tlačnim drogom (SHPB). Rezultati kažejo jasen pojav deformacijskega utrjevanja in toplotnega mehčanja pri QAL9-4, napetost tečenja ni odvisna od hitrosti obremenjevanja, hitrost obremenjevanja praktično nima vpliva na napetost tečenja pri sobni temperaturi, v temperaturnem območju od 300 °C do 700 °C pa ima majhen vpliv"}],"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-8EOKEB0C","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:doc-8EOKEB0C"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:doc-8EOKEB0C/a24591b9-db93-44bf-888a-7e736ef9d097/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-8EOKEB0C/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:doc-8EOKEB0C"}}}}