Beginning with a description of the physical and mathematical laws that govern deformation in solids, this text provides a concise, complete introduction to the concepts, analytical techniques, and numerical methods used to analyze deformation, stress, and failure in materials or components. The text presents modern constitutive equations, solutions to important boundary and initial value problems in solid mechanics, fracture mechanics, and the nonlinear theory of deformable rods, membranes, plates, and shells. The author also discusses the use of finite element software for stress analysis. Practice problems and sample computer programs are provided on the author's companion website.