Ανάλυση και σχεδιασμός πρωτότυπης υδραυλικής μηχανής δοκιμών εφελκυσμού θλίψης και στρέψης με χρήση μεθόδων CAD/CAE

Αποστολάκης, Μηνάς; Apostolakis, Minas

dc.contributor.author	Αποστολάκης, Μηνάς	el
dc.contributor.author	Apostolakis, Minas	en
dc.date.accessioned	2020-11-10T13:38:54Z
dc.date.available	2020-11-10T13:38:54Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/51883
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.19581
dc.rights	Αναφορά Δημιουργού-Όχι Παράγωγα Έργα 3.0 Ελλάδα	*
dc.rights.uri	http://creativecommons.org/licenses/by-nd/3.0/gr/	*
dc.subject	Μηχανή δοκιμών	el
dc.subject	Ολοκληρωμένος μηχανολογικός σχεδιασμός	el
dc.subject	Σχεδιασμός μηχανολογικών προϊόντων	el
dc.subject	Υδραυλικά συστήματα ισχύος	el
dc.subject	CAD	en
dc.subject	CAE	en
dc.subject	Structural Engineering	en
dc.subject	Biaxial testing machine	en
dc.subject	Power hydraulics	en
dc.subject	Μηχανή κόπωσης	el
dc.title	Ανάλυση και σχεδιασμός πρωτότυπης υδραυλικής μηχανής δοκιμών εφελκυσμού θλίψης και στρέψης με χρήση μεθόδων CAD/CAE	el
heal.type	bachelorThesis
heal.classification	CAD/CAE	el
heal.language	el
heal.language	en
heal.access	campus
heal.recordProvider	ntua	el
heal.publicationDate	2020-10-30
heal.abstract	The aim of this thesis is the analysis and design of a tension, compression, torsion fatigue testing machine in order to be manufactured and used by the machine design laboratory of the National Technical University of Athens. This machine is designed to fulfill the needs of the laboratory for its academic goals taking into consideration the most widely used materials in mechanical engineering. The analysis begins with the design of load frame of the machine. Every machine element is selected or designed to withstand the maximum loads that are defined in the specifications of the machine and to give high stiffness to the load frame. Then a modal analysis is performed to specify the eigenfrequency of the frame and supporting columns are added to the frame to increase its first eigenfrequency. A special study is done for the mechanism of adjustment of the right plate in order that the machine can perform tests with a variety of lengths of the specimen. Except the load frame, the hydraulic system is designed and each specimen is selected from the market in compliance with the needs of the hydraulic system. The parts that are not selected but are obligatory to be used is the electromechanical motor, the hydraulic pump and the accumulator which are available in the laboratory. The operating conditions of the accumulator are defined in order to give maximum flow supply to the system for fatigue testing. Every hydraulic manifold which is necessary for the hydraulic system is designed as well. For the complete design of the machine grips were also selected from the market and the necessary fittings are done to make the grips compatible with the machine parts. Finally, a mathematical modelling of the hydraulic and mechanical systems is performed in order to find the proper control law for fatigue testing for a wide variety of conditions.	en
heal.advisorName	Σπιτάς, Βασίλειος	el
heal.committeeMemberName	Προβατίδης, Χριστόφορος	el
heal.committeeMemberName	Αντωνιάδης, Ιωάννης	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Μηχανολόγων Μηχανικών. Τομέας Μηχανολογικών Κατασκευών και Αυτομάτου Ελέγχου. Εργαστήριο Στοιχείων Μηχανών	el
heal.academicPublisherID	ntua
heal.numberOfPages	100 σ.	el
heal.fullTextAvailability	false