O Prof. Younis é um dos maiores especialistas do mundo no tema Dinâmica Não-linear de Micro Sistemas, sendo editor associado de vários periódicos científicos de grande prestígio, como Nonlinear Dynamics e Journal of Vibration and Control.

Sexta Feira, dia 01/12/2017, 16:00h, Sala 304L, Edifício Cardeal Leme, Engenharia Civil, PUC-Rio

Nonlinear Dynamics Phenomena in Small and Large Scale Systems

Mohammad I. Younis

Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, NY 13902. Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.

In this talk we will first overview some of the ongoing research related to the nonlinear dynamics of

micro and nano systems. We demonstrate that by developing a proper understanding and deep insight of

the dynamics and nonlinear mechanics phenomena at the micro and nano scale, new technological

solutions and innovative ideas can be realized leading to new generations of superior devices. The second

part of the talk will be dedicated to the static and dynamic behavior of marine risers. Studying the riser

static configuration during installation is essential for avoiding static failure of the pipe by buckling.

Moreover, the dynamic interaction of the riser with the environment can lead to vortex induced vibrations

(VIV), which can lead to fatigue failures. This talk will discuss solving for the static defamation of the

riser using boundary-layer perturbation method. Then, the eigenvalue and forced vibration problems of

the rise are solved using the Galerkin method. Internal resonance scenarios will be demonstrated.

Mohammad I. Younis received a Ph.D. degree in engineering mechanics from Virginia Polytechnic

Institute and State University, Blacksburg, VA, in 2004. Since 2004, he has been serving as an assistant

and then as an associate professor of Mechanical Engineering at the State University of New York

(SUNY), Binghamton, NY. In 2013, he took a leave from SUNY to King Abdullah University of Science

and Technology, Saudi Arabia, where he has served as an associate professor of Mechanical Engineering

and a Director of the MEMS and NEMS Characterization and Motion Laboratory. Dr. Younis is a

recipient of the SUNY Chancellor’s Award for Excellence in Scholarship and Creative Activities in 2012,

the National Science Foundation Faculty Early Career Development Award in 2009, and the Paul E.

Torgersen Graduate Research Excellence Award in 2002. He holds several U.S. patents in MEMS sensors

and actuators. He serves as an Associate Editor of Nonlinear Dynamics, the Journal of Computational and

Nonlinear Dynamics, and the Journal of Vibration and Control. He has authored more than ninety

archival journal papers and a book, all on the fields of MEMS and NEMS statics and dynamics. He is a

member of the American Society of Mechanical Engineers.