Banca de DEFESA: HENRIQUE DE AGUIAR LIMA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : HENRIQUE DE AGUIAR LIMA
DATA : 12/12/2019
HORA: 09:00
LOCAL: Escola Politécnica UFBA
TÍTULO:

Vibration Analysis in Machines Foundations made of Concrete anchored to the soil with metalic rods

 

PALAVRAS-CHAVES:

Control of vibrations, rods, machine foundations, experimental analysis.

PÁGINAS: 138
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
SUBÁREA: Estruturas
ESPECIALIDADE: Mecânica das Estruturas
RESUMO:

Large rotary machines, such as electric motors and steam turbines, can generate intense dynamic efforts due to gaps and unbalance of equipment or parts thereof. Both the structure and the soil absorb these efforts and the displacements of each subsystem become dependent on each other for having different inertia and rigidities. Because of this mechanism, Soil-structure interaction (SSI) are extensively studied and several analytical, semi-analytical and are developed to investigate the real behavior of the system. In order to study the displacements imposed by motor vibration on a reinforced concrete base, a experimental analysis of a foundation subjected to excitations from a rotating machine. THE methodology used in the study consisted of the comparative analysis between two physical models submitted to the same conditions of dynamic load and supported in soil with similar characteristics. O first model was formed by a rigid block in reinforced concrete, directly supported to the ground, featuring a surface foundation. The second consisted of the same database coupled with a vertical anchorage with steel bars between the ground and the block surface. A finite element computational model was also implemented to compare the results. The use of the anchorage with rods indicated for the reduction of vibration amplitudes.

MEMBROS DA BANCA:
Presidente - 2256014 - MARCO TULIO SANTANA ALVES
Interno - 1675606 - ALEX ALVES BANDEIRA
Externo ao Programa - 2305993 - ALEXANDRE DE MACEDO WAHRHAFTIG
Externo à Instituição - EDSON HIDEKI KOROISHI - UTFPR