Master of Science, Linköping (Sweden) University, 1981. Doctor of Philosophy, Linköping (Sweden) University, 1985.
Research scientist, Linköping U., 1986-1987; senior lecturer, Linköping U., 1987-1991; professor, Linköping U., since 1992. Head division mechanics Linköping U., since 1994.
Member Swedish National Committee Mechanics.
Married Inger Birgitta Olsson, November 4, 1989. Children: Elin, Johan.