This 1960 book aims primarily to provide an insight into the vibration characteristics of a machine or structure.This 1960 book aims primarily to provide an insight into the vibration characteristics of a machine or structure rather than to present a recipe for formal calculations. Classical theory is developed by starting from the concept of steady forced motion and then introducing free motion as a limiting case.This 1960 book aims primarily to provide an insight into the vibration characteristics of a machine or structure rather than to present a recipe for formal calculations. Classical theory is developed by starting from the concept of steady forced motion and then introducing free motion as a limiting case.Originally published in 1960, the primary aim of this book was to give the reader an insight into the vibration characteristics of a machine or structure rather than to present them with a recipe for formal calculations. Within the text classical theory is developed by starting from the concept of steady forced motion and then introducing free motion as a limiting case. The concept of resistance or 'dynamic flexibility' is used throughout and provides a link between the treatment of very simple systems, multi-freedom systems with lumped parameters and infinite-freedom systems. It also provides a tool for breaking down complex problems into simpler parts. The mathematics will be understood by a student taking an honors course in engineering, and the book's primary purpose was to provide them with a background for their studies and with a path along which to advance for further work.Preface; General notation; 1. Introduction; 2. Generalized co-ordinates and Lagrange's equations; 3. Systems having any finite number of degrees of freedom; 4. The taut string; 5. The analysis of real systems, approximate methods; 6. Torsional and longitudinal vibration of uniform shafts and bars; 7. Flexural vibration of uniform beams; 8. Viscous damping; 9. Hysteretic damping; 1l“¢