Numerička analiza Stockbridgeovog prigušivača

Zeba, Josip (2016) Numerička analiza Stockbridgeovog prigušivača. = Numerical analysis of Stockbridge damper. Undergraduate thesis , Sveučilište u Zagrebu, Fakultet strojarstva i brodogradnje, UNSPECIFIED. Mentor: Jokić, Marko.

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Abstract (Croatian)

U ovom radu opisane su eolske vibracije vodiča dalekovoda, uzrok njihove pojave i posljedice koje imaju na uže. Ukratko je opisan osnovni vibracijski sustav te su prikazane osnovne jednadžbe. Detaljno je opisana konstrukcija Stockbridge prigušivača vibracija te su definirani pojmovi snage koju prigušivač disipira, mehaničke impedancije i faznog kuta između sile i brzine. Napravljen je numerički model (metoda konačnih elemenata) takvog prigušivača korištenjem programskog paketa Abaqus te su provedene frekvencijska i dinamička analiza prigušivača. Također je prikazano eksperimentalno ispitivanje istog prigušivača koje je provedeno u tvrtki Dalekovod d.d. Na kraju je prikazana usporedba jednog i drugog ispitivanja u odgovarajućim dijagramskim prikazima kako bi se verificirala točnost numeričkog modela prigušivača vibracija.

Abstract

This thesis describes aeolian vibrations of transmission line conductors, the cause of their occurrence and effects which they have on a rope. Shortly it describes basic vibration system and presents basic equations. Design of Stockbridge vibration damper is described in details and terms of power dissipated by the damper, mechanical impedance, as well as the phase angle between the force and the speed. Furthermore, numerical model (finite elements method) of mentioned damper is designed by using a software package Abaqus and frequency and dynamic analysis of damper are conducted. Also, experimental testing of the damper, conducted in the Dalekovod d.d. company, is presented in this thesis. In the end, thesis represents the comparison of the two tests in appropriate diagrams to verify the accuracy of the numerical model of vibration dampers.

Item Type:	Thesis (Undergraduate thesis)
Uncontrolled Keywords:	Stockbridgeov prigušivač; eolske vibracije; numerička analiza
Keywords (Croatian):	Stockbridge damper; aeolian vibration; numerical analysis
Subjects:	TECHNICAL SCIENCE > Mechanical Engineering
Divisions:	200 Department of Engineering Mechanics > 230 Chair of Mechanical Systems Dynamics
Date Deposited:	02 Mar 2016 15:15
Last Modified:	02 Mar 2016 15:15
URI:	http://repozitorij.fsb.hr/id/eprint/5166

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