Structural Mechanics of Engineering Constructions and BuildingsStructural Mechanics of Engineering Constructions and Buildings1815-52352587-8700Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)10876Research ArticleIMPACT OF A BAR WITH LUMPED MASS AT RIGID BARRIERSabodashP Ph-GolyshevA I-TatarkinM M-MSHA im.Timiryazeva, Moscow150620156374012092016Copyright © 2016, Structural Mechanics of Engineering Constructions and Buildings2016A stress wave propagation dynamic problem due to impact of elastic bar at a rigid barrier is considered. It is presumed, that the bar is equipped with a dot mass at free end and «sticks» to rigid barrier after impact. The problem is solved with Laplace transformation.barlumped massimpactrigid barrierLaplace transformationbound- ary conditionsinitial conditionsстержень,оголовок, удар, жесткая преграда, преобразование Лапласа, граничные условияначальные условия