A generalized approach was developed for solving contact problems in a dynamic elastic-plastic formulation. For the design of metal constructions, a technique for solving dynamic contact problems in more adequate an elastic-plastic mathematical formulation is used. To consider the physical nonlinearity of the deformation process, the method of successive approximations is used, which makes it possible to reduce the nonlinear problem to a solution of the sequences of linear problems. The problem of a plane strain state of a beam which has a welded joint with triangle shape is being solved. The narrow hard body hits from above in the centre of welded joint. The beam which has the welded joint is rigidly linked to an absolutely solid base.
Keywords: Plane, strain, state, impact, welded, joint, elastic-plastic, deformation.