This book covers the fundamentals of the elastic-plastic deformation including stress, strain, constitutive relations, fracture, anisotropy and contact problems along with a discussion of updated Lagrangian and Eulerian formulations. The second edition includes new material on thermal effects in plasticity and an introduction to crystal plasticity with review of all the chapters including more solved examples and a solutions manual. Features: Explores the physics behind the equations and computational aspects of plasticity. Reviews the latest developments in fracture mechanics including elasto-plastic behavior of solids. Explains anisotropy, thermal effects, dynamics plasticity, contact mechanics and ductile fracture. Provides introduction to crystal plasticity. Includes real-life examples in the form of solved and unsolved examples, and practice problems including MATLAB® and solutions manual. This textbook is aimed at senior undergraduate and graduate students in mechanics and mechanical engineering.