[en] The finite element method has been chosen for the development of the computer programs EURDYN for the transient dynamic analysis of large-displacement, small-strain problems with material non-linearities. Since the EURDYN programs were conceived as tools for numerical investigations in the field of fast reactor safety, their main options were dictated by the type of structural behavior and by the nature of loading encountered in this context. Dynamic problems with small strains but arbitrarily large linear and angular displacements are frequent in fast-reactor engineering. A very efficient technique for dealing with such problems consists in formulating the equations of motion in terms of convected coordinates that rotate but do not deform with the elements. This method has been adopted in EURDYN. Three versions of EURDYN have been developed and tested on the IBM 370/165. The programs are written in Fortran IV. (Auth.)