Solid Mechanics is a classical engineering discipline and it ranges from basic to applied sciences. The subject can be considered a link between material science and applied mechanics with emphasis on the latter. The discipline deals with the mechanical properties of solids and the behaviour of structures under loading. The research program at the department is focused on various aspects of biomechanics, composite mechanics, computational mechanics, contact mechanics, fatigue and fracture mechanics, material mechanics and paper mechanics. A primary goal in the research is to develop methods for reliable design of structures, material systems and processes. The undergraduate education includes basic courses in solid mechanics as well as advanced courses in specialized topics. There is a close connection between research, graduate and undergraduate education. New developments are reflected in continuous modifications of the undergraduate courses. Solid Mechanics has been represented by a chair at KTH Royal Institute of Technology since 1921. One additional professorship was created in 1961 and a third one in 1992 directed to Material Mechanics. A fourth chair in packaging technology was established in 2002. Since then professorships in biomechanics (2004) and reliable structures (2006) have also been established, Presently, the faculty of the department is composed of 6 professors, 3 associate professors and 1 assistant professor. The department has a well-equipped laboratory and workshop with two senior research engineers and two technicians. Since 2004 the department also is the host for Forest Products Industry Research College and since 2007 for BiMac Innovation Centre.