Page 26 - ASME IMECE 2018 Program

He is on the editorial board of thirteen international journals, noise using smart materials such as piezoelectric and
such as IJNME, CMAME, Computational Mechanics, and the
associate editor of JIMSS and AIAA. He is the co-editor of
several books and co-author of more than one hundred
publications in refereed international journals.
Roger Ohayon has pioneered the development of mechanical
and computational methods for prediction of fluid-structure
vibrations of coupled systems in fluid-structure interaction
(hydroelasticity and sloshing) and in structural-acoustics
(noise prediction). In this context of fluid-structure interaction
(attenuation for liquids in reservoirs) and of structural-acoustics
(for noise reduction), he proposed to reduce vibrations using
structural devices for smart adaptive intelligent thin systems
and, more recently, has proposed an original dissipative
interface modeling using passive/active and hybrid treatments.
Title: Computational Vibroacoustics in Low and Medium
Frequency Bands
It is proposed to analyse, from predictive computational point
of view—finite element discretization and specially appropriate
various reduced order models—the dynamic behaviour of
complex coupled systems and their adaptive intelligent
treatment of interfaces for vibration and noise reduction of
interior fluid-structure interactions problems, such as
liquid/gas-structure, in low and medium frequency domains.
The applications may be found, for example, in aerospace
engineering such as liquid propelled launchers for the
attenuation of the vibrations of liquids in tanks, the attenuation
of noise in fairings for the satellites as well as attenuation of
noise in fuselage cabin of aircrafts or helicopters, and
attenuation of noise in automotive industries.
The frequency domain of interest is quite important for the
computational analysis in order to avoid a large number of
degrees of freedom, which lead to prohibitive computer times.
In effect, the coupled situation is quite different from the
classical problem of acoustic response to prescribed structural
interface displacement/velocity fields because the dynamic of
the structure can be very complex (composite structure, for
instance). The low-frequency regime is characterized by a
low modal density for structural-acoustics systems in which
a frequency-independent modeling of the structural damping
is, in most cases, satisfactory. The medium frequency range
is characterized by a frequency-dependent damping in the
structure as well as in the fluid. A distinction should be
clearly made between gas and/or liquids taking into account
incompressibility/compressibility as well as light fluids/heavy
fluids considerations with gravity sloshing effects.
In parallel of direct symmetric variational formulations/
numerical finite elements for modal analysis of fluid-structure
interior vibrations, the construction of a family of appropriate
reduced order models is of prime importance for sensitivity
analysis, multidisciplinary optimization, updating with
experiments, as well as hybrid active/passive vibration
reduction treatments of those systems for their control
(as an example let us cite the modeling of “vibration and
xxiv noise devices” acting as physical interfaces such as
visco/piezo layers).Therefore, attenuation of vibrations and
magnetorheological devices will be considered.
The purpose of this presentation will be to give a review
synthesis of those aspects and perspectives.
Honors Reception
Sponsored by: Committee on Honors
5:30pm–6:30pm
Ballroom A Foyer,
David L. Lawrence Convention Center
All registered attendees are invited to attend this reception and
meet this year’s Honors Awards Recipients.
Honors Assembly
6:30pm–7:30pm
Ballroom A, David L. Lawrence Convention Center
All registered attendees are cordially invited to attend the 2018
ASME Honors Assembly. This multimedia program celebrates
some of today’s leading engineers, educators, entrepreneurs,
and innovators. This year’s Honors Awards Recipients are:
ASME MEDAL
Thomas J.R. Hughes, Ph.D., Fellow
The University of Texas at Austin
For the pioneering development of computer-aided
engineering and design technologies disseminated in
industrial and commercial software used throughout the
world, thereby improving engineering product development;
and for originating and leading new fields of computational
engineering research.
HONORARY MEMBER
Portonovo Ayyaswamy, Ph.D., Fellow
University of Pennsylvania
For exceptional contributions to mechanical engineering
through a career marked with seminal and groundbreaking
research scholarship, which has engendered transformational
technology transfer for diverse applications; and for exemplary
professional service to the worldwide scientific and practicing
thermal engineering community.
HONORARY MEMBER
Alan Needleman, Ph.D., Fellow
Texas A&M University
For pioneering research in the fields of computational
mechanics and computational materials science.
HONORARY MEMBER
Robert M. Nerem, Ph.D., Fellow
For outstanding contributions to the understanding of
dynamics of blood flow and blood vessels in health and
disease, and the development of tissue engineering for
palliative care; and for leadership in bridging and creating
opportunities for engineers to play a vital role in advancing
medicine.