This comprehensive work contains innovative material not often found in previous textbooks such as vibrations induced by non-zero initial conditions for systems with stable equilibrium and vibrations generated by conservative rotating systems. Also discusses characteristic phase-lag theory.
Hardcore formalism porn for the vibrational cognoscenti. If you enjoy stroking it to nested summations and notationally obscure representations of Lagrangian dynamics, this book is guaranteed to give you a rager. If, on the other hand, you want to learn about mechanical vibrations in dynamic structures anywhere beneath the level of abstraction of triple-coordinate changes into eigenmode bases, buy a bridge and a slinky.