Ahmed Shabana is University Distinguished Professor and the Richard and Loan Hill Professor of Engineering at the University of Illinois, Chicago. Professor Shabana is author of the books Dynamics of Multibody Systems (3rd edition), Computational Dynamics (3rd edition), Railroad Vehicle Dynamics, Theory of Vibration: An Introduction (2nd edition) and Vibration of Discrete and Continuous Systems (2nd edition). He has served on the editorial board of several journals and he is the Founding Chair of the ASME Technical Committee on Multi-Body Systems and Nonlinear Dynamics. He is a Fellow of the American Society of Mechanical Engineers (ASME).