Trdnostni preračun gredi elektromotorja

diplomsko delo

Luka Šobak (Author), Matej Borovinšek (Mentor), Damir Skuhala (Co-mentor)

Abstract

Razvoj sodobnih elektromotorjev s poudarkom na učinkovitosti in ekonomičnosti privede do novih tehničnih rešitev, ki jih je potrebno podrobno analizirati. Gred elektromotorja je ena izmed ključnih komponent rotorskega sestava, katere osnovna naloga je prenos vrtilnega momenta iz motorja na menjalnik. Glavni cilj diplomskega dela je bil preveriti deformacijsko in napetostno stanje gredi ter določiti, ali je obravnavana gred ustrezno dimenzionirana. Izvedena je bila nelinearna statična simulacija, katere rezultati kažejo, da so največje napetosti pod mejo tečenja gradiva. Zaradi dinamične narave obremenitev je pomembno upoštevati utrujanje materiala in zagotoviti, da so napetosti pod trajno dinamično trdnostjo gradiva. Izbrane točke v najbolj obremenjenih delih gredi so bile vrednotene po napetostni metodi s pomočjo Haighovega diagrama. Izračunani varnostni faktorji izbranih točk so večji od dopustnega varnostnega faktorja. Iz tega sklepamo, da je obravnavana gred ustrezno dimenzionirana in bo v svoji življenjski dobi zdržala neomejeno število ciklov.

Keywords

gred elektromotorja;metoda končnih elementov;numerična analiza;napetostna metoda;Haighov diagram;diplomske naloge;

Data

Language:	Slovenian
Year of publishing:	2024
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FS - Faculty of Mechanical Engineering
Publisher:	[L. Šobak]
UDC:	539.4:621.824(043.2)
COBISS:	212071683
Views:	0
Downloads:	0
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Strength assessment of electric motor´s shaft
Secondary abstract:	The development of modern electric motors with an emphasis on efficiency and cost, leads to new technical solutions that need to be thoroughly analyzed. The shaft is one of the key components of the rotor assembly, and its main task is to transfer torque from the electric motor to the gearbox. The main goal of this thesis was to check the shaft’s deformation and stress state and to determine whether the shaft is properly dimensioned. A nonlinear static simulation was performed, the results of which show that the maximum von Mises stresses are below the material's yield point. Due to the dynamic nature of the loads, it is important to consider material fatigue and ensure that the stresses are below the material’s endurance fatigue limit. Points selected in the most stressed parts of the shaft were evaluated according to the stress-life method using the Haigh diagram. The calculated safety factors of the selected points are greater than the permissible safety factor. From this, we conclude that the shaft is properly dimensioned and will withstand an unlimited number of cycles during its lifetime.
Secondary keywords:	electric motor's shaft;finite element method;numerical analysis;stress-life method;Haigh diagram;
Type (COBISS):	Bachelor thesis/paper
Thesis comment:	Univ. v Mariboru, Fak. za strojništvo, Konstrukterstvo
Pages:	1 spletni vir (1 datoteka PDF (XV, 51 f.))
ID:	24710437