P.M. Dixit & U.S. Dixit 
Plasticity [PDF ebook] 
Fundamentals and Applications

All materials undergo some deformation under the application of a load. When the load is removed, a solid material may return to its original state or retain some deformation. Plasticity: Fundamentals and Applications places emphasis on the fundamentals of elastic-plastic deformation. This book includes topics such as stress, strain, constitutive relations, fracture, anisotropy, and contact problems. In addition the text also provides a discussion of updated Lagrangian and Eulerian formulations.