Banca de DEFESA: TARCIANA ARAUJO BRITO DE ANDRADE

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : TARCIANA ARAUJO BRITO DE ANDRADE
DATE: 15/02/2024
TIME: 11:30
LOCAL: https://www.fa.ulisboa.pt/index.php/pt/component/sppagebuilder/page/80
TITLE:

BIMETAL BIOMODULE: kinetic and bioinspired.

KEY WORDS:

Biomimetic; Nastic Movements; Adaptive façade; Smart material; Bimetal creases.

PAGES: 422
BIG AREA: Ciências Sociais Aplicadas
AREA: Arquitetura e Urbanismo
SUMMARY:

The research proposes a kinetic module for adaptive façades by bioinspiration, material experimentation, and computational algorithm. It has an applied research nature and a qualitative approach and is structured in five phases. Through biomimetics methodology, literature review, contact with biologists and three observation studies, we arrived at nastic movements (plant movements independent of the direction of the stimulus), more precisely to the grass Ammophila arenaria, which possesses a reversible leaf movement. By developing multidisciplinary focus groups and analysing thirteen kinetic projects, we adopted the smart material, bimetal, to conduct our study. Bimetal responds to thermal variation and bends when heated. In reference to leaf morphology, we applied creases to the active layer of the bimetal. Ten exploratory experiments showed that the creases can contribute to the opening of the material when the temperature rises and to its closing when it cools down (opposite movement of the material without intervention). We developed prototypes of the modules for self-shading façades with creases made by stamping - the Bimetallic Biomodules. They were exposed to an open environment (in summer, fall, and during a heat wave). Statistical treatment of the data identified equations explaining the behaviour of the biomodules, proving that they are adaptable to different climatic conditions. The computational algorithm integrates the equations, generates parametric variations, and simulates protection by solar incidence. The research's contribution lies in the creases' relevance to controlling the bimetal’s behaviour enabling the biomodule's movement without needing electricity or mechanical devices. Technical challenges exist as there is a fine line between enhancing and preventing the movement of the biomodules. In future developments, we intend to build a 1:1 frame prototype; analyse material fatigue, thermal and lighting performance; plan the life cycle and production process. We hope the biomodules will contribute to thermal comfort in buildings with near-zero energy supply.

COMMITTEE MEMBERS:
Externo à Instituição - JORGE ROBERTO LOPES DOS SANTOS - PUC - RJ
Externo à Instituição - JOSÉ RUI DE CARVALHO MENDES MARCELINO - ULisboa
Externo à Instituição - JOSÉ PEDRO OVELHEIRO MARQUES DE SOUSA - UNIPORTO
Externo à Instituição - HUGO JOSÉ ABRANCHES TEIXEIRA LOPES FARIAS - ULisboa
Interno - 1131839 - AMILTON JOSE VIEIRA DE ARRUDA
Externo à Instituição - JOSÉ NUNO DINIS CABRAL BEIRÃO
Interna - 2155041 - LETICIA TEIXEIRA MENDES