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[{"key": "dc.contributor.advisor", "value": "Riikil\u00e4, Timo", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Kataja, Markku", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Kiiskinen, Sampsa", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2018-03-27T10:41:45Z", "language": "", "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2018-03-27T10:41:45Z", "language": "", "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2018", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1863159", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/57446", "language": "", "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Hauraiden materiaalien murtuminen on er\u00e4s materiaalifysiikan peruskysymyksist\u00e4.\r\nSille ei ole viel\u00e4k\u00e4\u00e4n olemassa t\u00e4ydellist\u00e4 teoreettista selityst\u00e4,\r\njoten ennusteiden tekeminen nojaa vahvasti\r\nkokeisiin ja niihin perustuviin numeerisiin malleihin.\r\nT\u00e4ss\u00e4 ty\u00f6ss\u00e4 suunnittelemme ja toteutamme diskreettielementtimenetelm\u00e4n\r\nsellaisen fysikaalisen systeemin tutkimiseen,\r\njossa kaksi haurasta pintaa leikkaavat toisiaan.\r\nKeskitymme erityisesti siihen kuinka erilaiset voimamallit\r\nsis\u00e4iselle kitkalle vaikuttavat materiaalin ulkoiseen kitkaan.\r\nK\u00e4ytt\u00e4m\u00e4ll\u00e4 graniittia koemateriaalina huomaamme,\r\nett\u00e4 sen ulkoinen kitka riippuu voimakkaasti sen sis\u00e4isest\u00e4 kitkasta,\r\nkun ulkoinen paine on l\u00e4hell\u00e4 materiaalin puristuslujuutta.\r\nMuutoin ulkoisen kitkan m\u00e4\u00e4r\u00e4\u00e4v\u00e4t p\u00e4\u00e4asiallisesti leikkauspintojen karkeus tai\r\nniiden v\u00e4liin muodostuneen sirpalekerroksen paksuus.\r\nToisaalta, riippumatta ulkoisesta paineesta,\r\nsis\u00e4inen kitka vaikuttaa voimakkaasti sirpalekerroksen\r\nsis\u00e4iseen mekaniikkaan.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "The fracture of brittle materials is a fundamental problem in material physics.\r\nIt still lacks a complete theoretical description,\r\nso making predictions relies heavily\r\non experiments and numerical models based on them.\r\nIn this work we design and implement a discrete element method\r\nto study the physical system of two brittle surfaces\r\nas they are sheared across each other.\r\nOur focus is specifically how different force models\r\nfor internal friction affect the dry friction of the material.\r\nBy using granite as our reference material,\r\nwe find that the dry friction depends strongly on the internal friction\r\nwhen the pressure is around the ultimate strength of the material.\r\nOtherwise the dry friction is primarily determined\r\nby the roughness of the surfaces or\r\nthe thickness of the fragment layer between the them.\r\nStill, regardless of the pressure,\r\nthe presence of internal friction strongly influences the mechanics\r\ninside the fragment layer.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Sampsa Kiiskinen (sapekiis) on 2018-03-27 10:41:44.130139. Form: Pro gradu -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake). JyX data: [jyx_publishing-allowed (fi) =True]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2018-03-27T10:41:45Z\r\nNo. of bitstreams: 2\r\nURN:NBN:fi:jyu-201803271855.pdf: 6961264 bytes, checksum: 1632a06d714913d03e5fbd5d73200daf (MD5)\r\nlicense.html: 4844 bytes, checksum: 977ef3cbe87e2161036df9996ed77028 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2018-03-27T10:41:45Z (GMT). No. of bitstreams: 2\r\nURN:NBN:fi:jyu-201803271855.pdf: 6961264 bytes, checksum: 1632a06d714913d03e5fbd5d73200daf (MD5)\r\nlicense.html: 4844 bytes, checksum: 977ef3cbe87e2161036df9996ed77028 (MD5)\r\n Previous issue date: 2018", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (92 sivua)", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "material physics", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "geophysics", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "computational physics", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "discrete element methods", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Modeling friction between shearing brittle surfaces with a discrete element method", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-201803271855", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Fysiikan laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Physics", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Fysiikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Physics", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.date.updated", "value": "2018-03-27T10:41:45Z", "language": "", "element": "date", "qualifier": "updated", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": "fi", "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4021", "language": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "geofysiikka", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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