Banca de DEFESA: Augusto Magalhães de Souza Pippi

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : Augusto Magalhães de Souza Pippi
DATE: 15/09/2023
TIME: 14:00
LOCAL: Online via plataforma Teams
TITLE:

NUMERICAL-EXPERIMENTAL STUDY OF ADJACENT COUPLED BUILDINGS USING INERTER ELEMENT

KEY WORDS:

Adjacent buildings, Inerter, Structural Control, Structural Coupling, Passive Control

PAGES: 100
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Estruturas
SPECIALTY: Mecânica das Estruturas
SUMMARY:

Due the greater population density in large urban centers, there is a tendency to build taller and closer buildings. The action of strong winds or seismic activity can generate excessive vibrations and even the collision between these buildings. The vibration control technique by structural coupling has been largely studied in recent decades due to its efficiency in reducing displacements and avoiding the pounding effect between coupled structures. The central idea of this method is to connect two or more adjacent buildings through structural control devices. The development of new devices, such as those based on inerter, brought new possibilities and solutions for the structural coupling technique. Inerter is an element in which the force applied to it is proportional to the relative acceleration between its terminals. Thus, the aim of this work is to study the use of different inerter-based devices numerically and experimentally in the structural coupling technique. In the numerical part, the performance of four different devices (three devices are inerter-based) connecting two adjacent buildings in controlling their dynamic responses is compared. To determine the mechanical characteristics of each device, the Particle Swarm Optimization algorithm is used. It is assumed that the disturbance of the system is produced by a random white noise process with zero mean. Three distinct objective functions are applied to determine which one best applies in each case. In the experimental part, experimental tests are carried out on a vibration table using two shear frame models of adjacent buildings. An experimental model of an inerter device to connect the two structures is designed and built. The results indicated that the inerter element has several advantages when applied in the structural coupling technique. It is possible to obtain greater reductions in dynamic responses and systems with more economical devices.

COMMITTEE MEMBERS:
Presidente - 1225412 - GRACIELA NORA DOZ DE CARVALHO
Interno - ***.843.298-** - JOSE LUIS VITAL DE BRITO - UnB
Externo ao Programa - 1619095 - MARCUS VINICIUS GIRAO DE MORAIS - UnBExterna à Instituição - LETÍCIA FLECK FADEL MIGUEL - UFRGS
Externo à Instituição - FLAVIO DE SOUZA BARBOSA - UFJF