Nonlinear Dynamics, Volume 1. Proceedings of the 34th IMAC, A Conference and Exposition on Dynamics of Multiphysical Systems: From Active Materials to Vibroacoustics, 2016, the fi rst volume of ten from the Conference, brings together contributions to this important area of research and engineering. Th e collection presents early fi ndings and case studies on fundamental and applied aspects of Structural Dynamics, including papers on:• Nonlinear Oscillations• Nonlinear Modal Analysis• Nonlinear System Identifi cation• Nonlinear Modeling & Simulation• Nonlinearity in Practice• Nonlinearity in Multi-Physics Systems• Nonlinear Modes and Modal Interactions