This edition of Advanced Mechanics of Materials adheres to the basic plan of earlier editions but with a considerable broadening of the chapter on Elastic Strain Energy and Energy Methods. As in the earlier editions, the subjects matter is divided into chapters covering duly recognized areas of study. Theory, derivation of formulas and profs of theorems are dealt in the beginning of each chapter followed by solution of problems and unsolved problems. It is hoped that this book will prove to be of immense help to the students. Valuable suggestions and pointed out printing errors for the improvement of the book.