Electronic Journal of Differential Equations, Vol. 2007(2007), No. 75, pp. 1-20. Title: Dynamic frictional contact for elastic viscoplastic material Author: Kenneth L. Kuttler (Brigham Young Univ., Provo, UT, USA) Abstract: Using a general theory for evolution inclusions, existence and uniqueness theorems are obtained for weak solutions to a frictional dynamic contact problem for elastic visco-plastic material. An existence theorem in the case where the friction coefficient is discontinuous is also presented. Submitted May 10, 2007. Published May 22, 2007. Math Subject Classifications: 74H20, 74H25, 74M15, 74M10, 74D10. Key Words: Dynamic frictional contact; set-valued inclusions; existence; uniqueness; discontinuous friction coefficient; normal compliance; elastic visco-plastic material.