Build on the foundations of elementary mechanics of materials texts with this modern textbook that covers the analysis of stresses and strains in elastic bodies. Discover how all analyses of stress and strain are based on the four pillars of equilibrium, compatibility, stress-strain relations, and boundary conditions. These four principles are discussed and provide a bridge between elementary analyses and more detailed treatments with the theory of elasticity. Using MATLAB® extensively throughout, the author considers three-dimensional stress, strain and stress-strain relations in detail with matrix-vector relations. Based on classroom-proven material, this valuable resource provides a unified approach useful for advanced undergraduate students and graduate students, practicing engineers, and researchers. Students are encouraged to use tools outside of problem solving using calculators; MATLAB® is integrated throughout the text and is used to solve stress and strain concepts Aims to teach students to think like engineers, and employs a step-by-step methodology based on fundamental principles applied throughout the book Provides a unique approach involving both the traditional displacement-based, and the more recent force-based analytical and numerical solutions Instructors will appreciate the complete online teaching package that includes slides, a solutions manual and MATLAB® code