Banca de QUALIFICAÇÃO: WILLIAM HENRIQUE DE LIMA FIUZA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : WILLIAM HENRIQUE DE LIMA FIUZA
DATE: 26/09/2022
TIME: 14:00
LOCAL: Sala de aula número 4 da ECT
TITLE:

Conception, Design and Structural Analysis of an Academic Shock Tube

KEY WORDS:

Shock tube, Finite element method, Three-dimensional modeling, Structural analysis

PAGES: 64
BIG AREA: Engenharias
AREA: Engenharia Aeroespacial
SUBÁREA: Estruturas Aeroespaciais
SPECIALTY: Projeto de Estruturas Aeroespaciais
SUMMARY:

The shock tube is an equipment used in laboratory studies concerning supersonic and hypersonic flows, as it provides important data on the flight conditions in which aerospace vehicles will find themselves. The Universidade Federal do Rio Grande do Norte (UFRN) has stainless steel tubes donated by the Instituto de Estudos Avançados (IEAv) for the construction of the university's first shock tube. The objective with the project presented is to technically make the construction of the equipment feasible. The calculations of the flow conditions, the modeling and the structural analysis of the high and low pressure sections, driver and driven, respectively, of the academic shock tube were carried out, considering the dimensions of the stainless steel tubes that UFRN has, in addition to of the efforts to which they are submitted during the operation. Analytical (Lamé Equations) and numerical (Ansys Mechanical 2022) results of circumferential, radial and von Mises stresses were compared using their percentage changes. Both the driver and the driven were closed with flanges and considered as pressure vessels. The correct dimensioning of the components is fundamental, in order to avoid accidents and errors in the information obtained in the tests, since it is an equipment that works with high pressures and temperature variations. Modeling in software avoids waste of materials and operational risks with the construction of several prototypes. Boundary conditions and applied loads must be correctly selected for a good level of confidence in a job like this. The project will be academically useful and economically viable, for future use at the university level. The software Ansys SpaceClaim and Ansys Mechanical 2022 in their student versions were used for the analysis, with discretization of the models by mesh generation and application of the Finite Element Method. A pressure of 70 atm (7.09 MPa) was applied to the inner surface of the high pressure section during the computer simulation, while other pressures generated in the flow were calculated and applied to the low pressure section. The results of von Mises stresses, circumferential stresses and radial stresses indicate that the available tubes can withstand such a workload without suffering damage, in accordance with the properties of stainless steel. This project concerns the first stage for the construction of the shock tube, in a partnership between UFRN and IEAv.

COMMITTEE MEMBERS:
Presidente - ***.408.158-** - PAULO GILBERTO DE PAULA TORO - ITA
Interno - 2524058 - DOUGLAS DO NASCIMENTO SILVA
Interno - 1235107 - GEORGE SANTOS MARINHO
Externo à Instituição - PAULO CELSO GRECO JÚNIOR - USP