Research interests include: nonlinear phenomena, dynamics and vibrations, and control. Recent efforts have focused on taking advantage of nonlinear phenomena for the benefit of a system. He has authored/co-authored over sixty journal publications, a Wiley textbook entitled "Applied Nonlinear Dynamics: Analytical, Computational, and Experimental Methods" (1995, 2006), and a Thomson/Cengage textbook entitled "Vibrations" (2009). He serves on the editorial board of the Journal of Vibration and Control, is a Deputy Editor of the AIAA Journal, and is an Associate Editor of the ASME Journal of Computational and Nonlinear Dynamics. He is a Fellow of ASME and AIAA, and a member of ASA, AAM, IEEE, and SPIE. He served as the Chair of the ASME Applied Mechanics Division Technical Committee on Dynamics and Control of Structures and Systems from 2005 to 2007, and he currently serves as the Chair of the ASME Design Engineering Division Technical Committee on Multibody Systems and Nonlinear Dynamics. In the Department, he has served as the Leader of the Mechanics and Materials Division from 1999 to 2006, as the Director of Graduate Studies from July 2006 to July 2010, as the Associate Chair from July 2006 through to July 2010, and the Acting Chair from August 2010 to May 2011.
Nonlinear phenomena, dynamics and vibrations, and control.