Εφαρμογη μή γραμμικών ιξωδοπλαστικών μοντέλων σε μεγαλες παραμορφώσεις πολυμερούς

Μαλαπάνης, Δημήτριος; Malapanis, Dimitrios

dc.contributor.author	Μαλαπάνης, Δημήτριος	el
dc.contributor.author	Malapanis, Dimitrios	en
dc.date.accessioned	2018-02-21T09:05:32Z
dc.date.available	2018-02-21T09:05:32Z
dc.date.issued	2018-02-21
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/46555
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.7529
dc.description	Εθνικό Μετσόβιο Πολυτεχνείο--Μεταπτυχιακή Εργασία. Διεπιστημονικό-Διατμηματικό Πρόγραμμα Μεταπτυχιακών Σπουδών (Δ.Π.Μ.Σ.) “Εφαρμοσμένη Μηχανική”	el
dc.rights	Default License
dc.subject	Ιξοδωπλαστικότητα	el
dc.subject	Παραμορφώσεις πολυμερούς
dc.subject	Viscoelasticity	en
dc.subject	Polymer deformations	en
dc.title	Εφαρμογη μή γραμμικών ιξωδοπλαστικών μοντέλων σε μεγαλες παραμορφώσεις πολυμερούς	el
heal.type	masterThesis
heal.classification	Ιξωδοπλαστικότητα	el
heal.language	el
heal.access	campus
heal.recordProvider	ntua	el
heal.publicationDate	2017-10-27
heal.abstract	In this paper we present a study of a visco - plastics model from the literature and then using the mathematica program the stress - strain, relaxation and creep curves are calculated by numerical methods and compared with experimental data of PTFE material (p olytetrafluoroethylene) obtained also from the literature. Additionally, two new models are introduced, a relatively simple and a more complex with more parameters, where they are also compared with the experimental data. The purpose of the study is to st udy the time - dep endent properties of materials, as they emerge with monotonic loading, creep and relaxation, with the same model. The thesis consists of six chapters. The first chapter describes the theory of linear viscoelasticity and presents the b asic l inear viscoelastic models. The second chapter describes the theory of nonlinear viscoelasticity and ways of approaching it. Also, the theory of the equation of Eyring. The third chapter presents viscoelasticity and its difference with viscoelasticity and s ome visco - plastic models are presented. In the fourth chapter are presented the characteristics of PTFE and the experimental data. In the fifth chapter are presented the three models (one of the bibliography and two were constructed) and compared with the experimental data of the previous chapter. In the last chapter the conclusions are presented and an evaluation of the models is made. Finally, the 'mathematica' codes used and an appendix with the mathematical supplement are listed	en
heal.advisorName	Κοντού Ευαγγελία	el
heal.committeeMemberName	Κοντού, Ευαγγελία	el
heal.committeeMemberName	Θεοτόκογλου, Δημήτριος	el
heal.committeeMemberName	Ευταξιόπουλος, Δημήτριος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Εφαρμοσμένων Μαθηματικών και Φυσικών Επιστημών	el
heal.academicPublisherID	ntua
heal.numberOfPages	73 σ.	el
heal.fullTextAvailability	true