magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
Urban Cotič (Author), Martin Česnik (Mentor), Miha Boltežar (Co-mentor)

Abstract

Predpostavka o linearnosti dinamskih sistemov je v večini inženirskih aplikacij smotrna, v nekaterih primerih, kot je npr. uležajenje rotorja s krogličnimi ležaji, pa temu ni tako. V tem delu je bil računan odziv nelinearnega dinamskega sistema z numerično integracijo v časovni domeni. Za vrsto sistemov, geometrijskih nelinearnosti in tipov vzbujanja je bil dokazan vpliv na amplitudo odziva in akumulacijo poškodbe. Podrobneje so bile analizirane statistične značilke odziva sistema. Predlagana je bila nova metoda za določanje gostote močnostnega spektra sistema pri sinusnem preletu.

Keywords

magistrske naloge;vibracije;nelinearni dinamski sistemi;geometrijska nelinearnost;utrujanje;števne metode;numerična integracija;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FS - Faculty of Mechanical Engineering
Publisher: [U. Cotič]
UDC: 519.6(043.2)
COBISS: 102959875 Link will open in a new window
Views: 430
Downloads: 68
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: Effect of geometric non-linearity on damage accumulation in case of vibration fatigue
Secondary abstract: Assuming linearity of a dynamic system is indeed the correct choice for most applications. In some cases however, e.g. fixating a rotor via ball bearings, assumption of linearity does not suffice. The response of a non-linear dynamic system was calculated in this work via numeric integration in the time domain. The effects of geometric non-linearity and type of excitation on the amplitude of the response and damage rate was proven for multiple types of dynamic systems. Statistical parameters of the responses were analysed and a novel method for calculating power spectrum density was proposed.
Secondary keywords: master thesis;non-linear dynamic systems;geometrical non-linearity;counting methods;
Type (COBISS): Master's thesis/paper
Study programme: 0
Thesis comment: Univ. Ljubljana, Fak. za strojništvo
Pages: XXIV, 70 str.
ID: 14900704
Recommended works:
, magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
, diplomska naloga visokošolskega strokovnega študijskega programa
, zaključna naloga Univerzitetnega študijskega programa I. stopnje Strojništvo - Razvojno raziskovalni program
, no subtitle data available
, zaključna naloga Razvojno raziskovalnega programa I. stopnje Strojništvo