Banca de DEFESA: João Luiz Guerra Freire

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : João Luiz Guerra Freire
DATA : 20/02/2018
HORA: 14:00
LOCAL: Centro Federal de Educação Tecnológica de Minas Gerais
TÍTULO:

STRUCTURAL CHARACTERIZATION OF AN OVERHEAD CRANE BY THEIR MODAL PARAMETERS

PALAVRAS-CHAVES:

Operational Modal Analysis, Stochastic Modal Identification, Numerical Model Calibration, Extensometry Testing, Static Load Testing.

PÁGINAS: 79
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
SUBÁREA: Estruturas
RESUMO:

The objective of this study is the structural characterization of a liquid steel transport overhead crane, with 120 tons of capacity on the main car, 30 tons in the auxiliary car and 22,5 m free span; by its modal parameters such as natural frequencies, damping rates and modes of vibration.

The experimental modal parameters of the crane structure were obtained from the recording of its vibrations in a real situation, by measurements of piezoelectric accelerometers. Its structural characterization will be obtained by adjusting the modal values of a numerical model based on the Finite Element Method to the experimental values.

In order to validate the technique, the results will also be compared through numerical simulation of the topographic measurement and extensometry tests. Through this results comparison, it is expected to evaluate quantitatively the difference between the values obtained with the modal analysis results and the usual static tests of deflectometry and extensometry.

MEMBROS DA BANCA:
Presidente - CLAUDIO JOSE MARTINS
Interno - PETER LUDVIG
Externo ao Programa - RENATA GOMES LANNA DA SILVA
Externo à Instituição - WALNORIO GRACA FERREIRA - UFES