Où docteurs et entreprises se rencontrent
Menu
Connexion

Vous avez déjà un compte ?

Nouvel utilisateur ?

Vous aviez déjà un compte sur l’ancien site de l’ABG, afin de le valider aujourd’hui, merci de suivre la procédure de récupération de mot de passe.

Mot de passe oublié

Nonlinear vibroacoustic response of finite-size porous and micro-perforated plates

ABG-79755 Sujet de Thèse
09/08/2018 Salaire à négocier
Logo de
École de Technologie Supérieure - Université du Québec
Montréal - Canada
Nonlinear vibroacoustic response of finite-size porous and micro-perforated plates
  • Sciences de l’ingénieur
  • Physique
Vibration, vibroacoustic, acoustic, porous plate, micro-perforated structure, nonlinear vibration, high sound pressure level, mechanical damping, sound absorption, sound radiation

Description

Metallic open-cell porous plates and micro-perforated plates are lightweight structures, which can be used in harsh environments, such as aircraft engines where high sound pressure levels and high amplitude vibrations are expected. Such structures involve viscous and thermal material mechanisms, which translate into mechanical damping and sound absorption properties. Previous studies on the vibrations in the linear regime of thin poroelastic plates have shown that the fluid solid interaction can induce a substantial additional damping. However, vibroacoustic indicators (MSV, radiated sound power, efficiency) for porous or perforated plates should be further investigated. Moreover, it is known from experimental investigations that the vibroacoustic response of the above systems is very sensitive to the magnitude of external excitations. Accordingly, it is proposed to explore analytical, semi-empirical and numerical avenues to extend the current model to a nonlinear framework. An attendant experimental program will bring physical insight, characterize and validate the implemented models.
The project will be articulated in three parts:
- Nonlinear vibroacoustic response of finite-size porous plates under high sound pressure level,
- Nonlinear vibroacoustic response of finite-size porous plates under strong levels of displacement,
- Application for Nonlinear vibroacoustic to micro-perforated structures.

This project corresponds to a collaboration between ÉTS (Montreal, Canada), McGill (Montreal, Canada) and Université de Bourgogne (Nevers, France). Various trips to the collaborative laboratories will be scheduled.

Nature du financement

Autre financement public

Précisions sur le financement

Grant 20 k$ CAD / year + teaching assistantships

Présentation établissement et labo d'accueil

École de Technologie Supérieure - Université du Québec

École de Technologie Supérieure (ÉTS)  is a part of Université du Québec.

ÉTS has upwards of 10,600 students, with more than 2,600 at the graduate level (close to 580 at the doctorate level). Almost one out of four engineers in Québec is a graduate of ÉTS. Close to 20,000 graduates since 1974, and nearly 2,700 at the graduate and doctorate levels.

ÉTS comprises 26 research chairs, including 9 institutional chairs, and 27 groups of researchers who produce close to 700 publications every year (articles, conferences, technical reports, etc.). Funding for research and innovation exceeds $34,5 M.

This project corresponds to a collaboration between ÉTS-Département génie mécanique (Montreal, Canada), McGill University-department of Mechanical Engineering (Montreal, Canada) and Université de Bourgogne - ISAT (Nevers, France). Various trips to the collaborative laboratories will be scheduled.

Intitulé du doctorat

Doctorat en recherche appliquée (Ph.D.)

Pays d'obtention du doctorat

Canada

Etablissement délivrant le doctorat

École de Technologie Supérieure

Ecole doctorale

Profil du candidat

The interested applicant is expected to show good skills in the areas of structural vibration, acoustics and vibroacoustics.

Date limite de candidature

Postuler
Fermer

Vous avez déjà un compte ?

Nouvel utilisateur ?


Mot de passe oublié
Besoin d'informations ?

Vous souhaitez recevoir une ou plusieurs lettres d’information de l’ABG. Chaque mois des actualités, des offres, des outils, un agenda…

item1 item1
item1 item1 item1