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Forum > Forum II : Nonlinear vibration and noise

Forum II: Non-linear vibration and noise

Non-linear vibration and noise problems arising due to non-linear elastic and dissipation/friction elements, finite amplitudes and material properties continue to fascinate and challenge researchers and practitioners. It is the purpose of this forum to provide three intellectually stimulating lectures ranging from non-linear modes and associated spectral contents, friction-induced sound radiation from brakes, and energy harvesting using bi-stable system. Topics of discussion may include recent experimental and computational developments, needs of vibro-acoustics community, vibration and acoustic design using intentionally non-linear concepts and the like.

 

Chair: Prof. Rajendra Singh,

Academy Professor, Dept. of Mechanical and Aerospace Engineering and OSU Emeritus Academy
The Ohio State University, Columbus, OH 43210, USA 

Resultat d'imatges de rajendra singh acoustics

Professor Rajendra Singh is well recognized for research in machine dynamics, vibration, acoustics, nonlinear dynamics and DSP with applications to automotive systems and geared drives. Over the past 38 years at Ohio State, he has published more than 475 papers (including 235 journal articles), successfully supervised over 120 PhD & MS students, and held the distinguished Donald Glower Chair at Ohio State for 15 years until his retirement in 2014. Dr. Singh is a fellow of ASME, ASA, SAE, and INCE/USA, and has received many national awards for both teaching and research.   He serves on the editorial boards of Journal of Sound & Vibration, Applied Acoustics, Journal of Mechanical Engineering Science, etc. and was the President of the Institute of Noise Control Engineering/USA in 2003.  Go to the http://autonvh.org/ for more information and articles published.

 

Confirmed keynote speakers:

Prof. Gaetan Kerschen,

University of Liège, Belgium.

 Kerschen

Gaëtan Kerschen completed his Ph.D. degree in Aerospace Engineering from the University of Liège in Belgium in 2003. In 2003 and 2004, he was a visiting postdoctoral fellow at National Technical University of Athens and at the University of Illinois at Urbana-Champaign. Since 2007, he has been a faculty member at the University of Liège, where he is a professor in the Department of Aerospace and Mechanical Engineering. His expertise is primarily in the area of nonlinear structural dynamics, and his research contributions address both the computational and experimental aspects of nonlinear vibration. He is the recipient of two European Research Council (ERC) grants, namely an ERC Starting Grant and an ERC Proof of Concept Grant, and of the 2017 Belgian Francqui Chair at the Vrije Universiteit Brussel. He is the co-founder of NOLISYS, a startup company which provides solutions and software for nonlinear vibrating systems.

 Topic: Resonances of nonlinear mechanical systems: a nonlinear normal mode perspective

Abstract: The concept of resonance is central in structural dynamics, because the maximum amplitude at which a system or a product vibrates occurs at resonance frequencies. Unlike linear systems, nonlinear systems can exhibit different types of resonances including fundamental, internal and isolated resonances. In this presentation, we show how the nonlinear normal mode (NNM) theory can be exploited for a thorough understanding of the impact of nonlinearity on system dynamics. Both the numerical computation of NNMs and their identification from experimental data are discussed.

 

Dr. Sebastian Oberst

Senior Lecturer, PhD (UNSW), Dipl.-Wirtsch.-Ing. (TU)
Centre for Audio, Acoustics and Vibration
Faculty of Engineering & IT
University of Technology Sydney, Australia.

Oberst

 Topic: Nonlinear Dynamics: a paradigm change via evidence-based complex dynamics modelling

  

Prof. Kon-Well Wang

Tim Manganello/BorgWarner Department Chair and Stephen P. Timoshenko Collegiate Professor
Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109-2125, USA.

KonWell

Topic: Harnessing Bistable Dynamics – An Emerging Approach for Vibration Engineering

 

 

 

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