Friction and Wear: Calculation Methods provides an introduction to the main theories of a new branch of mechanics known as ""contact interaction of solids in relative motion."" This branch is closely bound up with other sciences, especially physics and chemistry. The book analyzes the nature of friction and wear, and some theoretical relationships that link the characteristics of the processes and the properties of the contacting bodies essential for practical application of the theories in calculating friction forces and wear values. The effect of the environment on friction and wear is also considered. Finally, the requirements, which must be fulfilled by the physicomechanical properties of the materials of which contacting bodies are made and which determine their behavior in moving contacts, are formulated. The book will be of interest to a wide circle of readers, e.g. engineers, designers, machine users, and research workers, working on the production of wear-resistant materials and working on the nature of friction and wear.