This volume contains the proceedings of the 3rd Contact Mechanics International Symposium, held at Praia da Consolacao, Peniche, Portugal, June 17-21, 2002. There are forty-four papers written by leading researchers in fundamental and applied contact mechanics.The book is divided into chapters on dynamics and impact; instabilities, oscillations and waves, contact models, results and applications, mathematical analysis, and numerical methods.This work will appeal to engineers and researchers in applied mathematics and in physical and mechanical sciences, particularly those who specialize in dynamics and vibration, impact on solids, tribology and in mathematics of mechanics.