Inlämning av Examensarbete / Submission of Thesis

Armando Enrique León Guarena BTH-AMT-EX--2007/D-08--SE, pp. 64. TEK/avd. för maskinteknik, 2007.

The work

Författare / Author: Armando Enrique León Guarena
aegu05@student.bth.se
Titel / Title: Study on Vibrations induced by Parametric Excitations on Strings
Abstrakt Abstract:

The present thesis work studies the parametrically excited vibrations on bridge stay cables when the natural frequency of the bridge tower is half of the resonance frequency of the cable. This condition is found at the longest stay cables of the Øresund Bridge. Experimental and numerical analysis is carried out based on a simplified scaled model (1:200) of this bridge, replacing the cables by strings made of steel. When parametrically excited vibrations are studied, certain relations between resonance frequencies of bridge tower and cable lead to high vibration levels. The most critical relation is when the tower frequency is double the cable frequency. The case studied here, where the tower frequency is half of the cable frequency, shows to be less severe.

Ämnesord / Subject: Maskinteknik - Mechanical Engineering\Structural Dynamics
Maskinteknik - Mechanical Engineering\General
Nyckelord / Keywords: Vibrations, Parametric Excitations, Strings, Stay Cables, Modal Analysis

Publication info

Dokument id / Document id:
Program:/ Programme Masters programme in Mechanical Engineering, 60 points
Registreringsdatum / Date of registration: 06/13/2007
Uppsatstyp / Type of thesis: D-Uppsats/Magister/Master

Context

Handledare / Supervisor: Prof. Kjell Ahlin
kjell.ahlin@bth.se
Examinator / Examiner: Ansel Berghuvud, Kjell Ahlin
Organisation / Organisation: Blekinge Institute of Technology
Institution / School: TEK/avd. för maskinteknik
S-371 41 Karlskrona
+46 455 38 50 00
I samarbete med / In co-operation with: Department of Mechanical Engineering of Blekinge Tekniska Högskola
Anmärkningar / Comments:

ingmsc.armandoleon@gmail.com

Files & Access

Bifogad uppsats fil(er) / Files attached: bth_amt_ex_2007d08_se.pdf (916 kB, öppnas i nytt fönster)