{"?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-9BZKMML2/14158868-102d-418f-acc3-9215b0913b06/HTML","dcterms:extent":"43 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-9BZKMML2/7ae4183d-7b39-4c48-b1dd-681e37a30546/PDF","dcterms:extent":"718 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-9BZKMML2/17a6f089-9581-4678-b59f-7b81fccdecf6/TEXT","dcterms:extent":"44 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-9BZKMML2","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:spr-6QOUKQ9A"},{"@xml:lang":"sl","#text":"Strojniški vestnik"}],"dcterms:issued":"2001","dc:creator":["Fajdiga, Matija","Klemenc, Jernej"],"dc:format":[{"@xml:lang":"sl","#text":"številka:10"},{"@xml:lang":"sl","#text":"12 strani"},{"@xml:lang":"sl","#text":"letnik:47"},{"@xml:lang":"sl","#text":"str. 593-604"}],"dc:identifier":["ISSN:0039-2480","COBISSID:5000219","URN:URN:NBN:SI:doc-9BZKMML2"],"dc:language":["en","sl"],"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":"algoritem EM"},{"@xml:lang":"sl","#text":"dinamične obremenitve"},{"@xml:lang":"sl","#text":"funkcije Gauss"},{"@xml:lang":"sl","#text":"Gaussova funkcija"},{"@xml:lang":"sl","#text":"gostota porazdelitve verjetnosti"},{"@xml:lang":"sl","#text":"konstrukcije"},{"@xml:lang":"sl","#text":"metode maksimalne verjetnosti"},{"@xml:lang":"sl","#text":"modeliranje"},{"@xml:lang":"sl","#text":"utrujanje"}],"dcterms:temporal":{"@rdf:resource":"1999-2025"},"dc:title":{"@xml:lang":"sl","#text":"Modeliranje padavinskih matrik z mešanico Gaussovih funkcij| The modelling of rainflow matrices with a mixture of Gaussian functions|"},"dc:description":[{"@xml:lang":"sl","#text":"To evaluate the fatique damage of a dynamically loaded structure, a time history of the structure load should be acquired first. This can be done by means of experiments or simulations. When the time history of the loads is known, it should be transformed into a form that is suitable for the prediction of the fatique damage. This fatique damage of the structure depends heavily on the load cycles that are included in the load time history. Load cycles are extracted from the load time history with different counting methods. A rainflow counting method is widely used in the automotive industry. The rainflow counting industry method results in a matrix of the relative frequencies of the load cycles, which are included in the load time history. With an approximation of the rainflow matrix by a continuous probability density function, random fluctuations of the relative frequencies are reduced and an extrapolation of the probability of the load cycles that were not actually recorded is made possible. In our paper a method of modelling the rain flow matrices by means of a mixture of Gaussian functions will be presented. Unknown parameters of the normal mixture will be estimated with a maximum-likelihood method. The effectiveness of this method will be presented and discussed with an example of the load time histories of a real structure"},{"@xml:lang":"sl","#text":"Za vrednotenje dinamično obremenjenih konstrukcij z vidika utrujanja, je treba poznati dinamične obremenitve konstrukcije, ki jih dobimo z meritvami ali simuliranji. Tako dobljene časovne poteke obremenitve nato spremenimo v obliko, ki je primerna za napoved utrujenostne poškodbe. Ker je utrujenostna poškodba odvisna od obremenitvenih ponovitev, ki so vsebovani v časovnem poteku obremenitev, iz časovnega poteka obremenitev najprej izločimo obremenitvene ponovitve z uporabo števnih metod. V ta namen se v avtomobilski industriji pogosto uporablja padavinska števna metoda, katere rezultat je matrika relativnih frekvenc obremenitvenih ponovitev. Z aproksimacijo padavinske matrike z ustrezno zvezno funkcijo gostote porazdelitve verjetnosti izločimo naključne fluktuacije relativnih frekvenc v matriki in omogočimo ekstrapolacijo verjetnosti v področje obremenitvenih ponovitev, ki se niso pojavili v izmerjeni ali simuliranem časovnem poteku obremenitev. V prispevku je prikazana metoda modeliranja padavinskih matrik z mešanico Gaussovih funkcij. Ocena neznanih parametrov mešanice Gaussovih funkcij je izvedena z metodo največje verjetnosti. Uspešnost te metode je ocenjena na primerih realnih časovnih potekov obremenitev"}],"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-9BZKMML2","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-9BZKMML2"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-9BZKMML2/7ae4183d-7b39-4c48-b1dd-681e37a30546/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-9BZKMML2/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-9BZKMML2"}}}}