Zasnova preizkuševališča za karakterizacijo dinamskega odziva rotacijskih naprav

magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo

Marko Protič (Author), Gregor Čepon (Mentor), Miha Boltežar (Co-mentor)

Abstract

V delu je predstavljen potek zasnove preizkuševališča za karakterizacijo dinamskega odziva rotacijskih naprav. Prikazan je razvoj numeričnega modela, od posamičnih struktur do sklopljenega sistema. Obravnavana kroglična ležaja smo poenostavljeno modelirali prek prostorske togostne matrike, ki je rezultat matematično formuliranega modela tega strojnega elementa. Pri tem, je bil glavni poudarek na raziskavi načina implementiranja togostne matrike v MKE model, v programskem okolju ANSYS Workbench. Za namen validacije numeričnega modela, smo izdelali tudi preizkuševališče, ki smo ga parcialno ovrednotili s postopkom eksperimentalne modalne analize. Zaradi kompleksnosti sistema, smo dodatno še raziskali načine izboljšanja rezultatov MKE modelov. To smo izvedli preko identifikacije materialnih lastnosti posameznih strukturnih segmentov, kot tudi implementacije različnih načinov modeliranja sklopljenih struktur.

Keywords

magistrske naloge;preizkuševališče;numerična simulacija;analitični model;kroglični ležaji;identifikacija materiala;sklapljanje;

Data

Language:	Slovenian
Year of publishing:	2018
Typology:	2.09 - Master's Thesis
Organization:	UL FS - Faculty of Mechanical Engineering
Publisher:	[M. Protič]
UDC:	519.876.5:621.825(043.2)
COBISS:	16426267
Views:	1060
Downloads:	441
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Design of a test bench for the characterization the the dynamic response of rotary devices
Secondary abstract:	This thesis presents the process of designing a test bench for the characterisation of a dynamic response of rotary machines. The process of numerical model construction, from individual structures to a coupled system, is presented. The ball bearings are simplified through a spatial stiffness matrix, which is the result of the mathematically formulated model of this machine element. The main focus was on implementation of the bearing matrix in the FEM model, in the ANSYS Workbench environment. For the purpose of validation, the experiments were conducted on parts of the structure using experimental modal analysis. Due to the complexity of the system, the various possibilities to improve FEM model were investigated. The improvements were oriented towards the identification of the material properties of the individual structural segments, as well as the research of different ways of modelling the coupled structures.
Secondary keywords:	experimental setup;numerical simulation;analytical model;ball bearings;identification of material;coupling;
Type (COBISS):	Master's thesis/paper
Study programme:	0
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. Ljubljana, Fak. za strojništvo
Pages:	XXVI, 109 str.
ID:	10958899