Based on courses taught at the Indian Institute of Technology, this book unifies two concepts, vibration of mechanical Systems and structural dynamics , in an integrated manner. The editor follows an intuitive pedagogy introducing fundamentals and moving on to more advanced concepts. It includes numerous examples and reviews the most useful computer software. Additional topics include free vibration of Single degree of freedom, system forced vibration of single degree of freedom system, numerical methods in structural analysis, vibration of two degrees of freedom, system free vibration of multiple degrees of freedom, and system forced vibration analysis of multiple degrees of freedom systems.