Textbook in PDF format This book is intended to serve as an undergraduate textbook on mechanics of solids for the engineering students. It provides conceptually sound and rigorous foundation of three-dimensional concepts of stress, strain, constitutive relations, yield criteria, brittle fracture and fatigue failure; and energy-related theorems. Subsequently, this theory is applied rigorously to the elastic and elastic-plastic analyses of bars under axial force, twisting moment, bending moment, general loading and buckling of columns. This textbook also covers visco-elastic response of bars, standard tension and compression tests. The book includes pedagogical features like worked out examples, chapter reviews and end-of-chapter exercises to aid in self-learning of the students. This book will be highly useful for the undergraduate engineering students as a textbook and reference book for postgraduate students/researchers