Keyword: «velocity»

The paper presents the methodological foundations of teaching the mechanics of fluids at Nizhny Novgorod State Technical University named after R. E. Alekseyev, based on physical and mathematical modeling of stationary process flow in pipelines, simplest hydraulic resistance and free flows. Students perform laboratory work on physical modeling on universal hydraulic stand and mathematical modeling practical work on personal computers.

One of the little-studied problems of modern mechanics and the physics of fracture is the branching of the crack, which is observed in materials of a different nature. To experimentally determine the rate of crack branching velocity in steels, a series of tests were carried out on the fracture by internal pressure of steel thin-walled cylindrical shells (vessels) with measuring of the crack velocity by the method of breaking the conductive strips. A measurement setup was created on the basis of a precision converter “Tercon” signals of resistance thermometers and thermocouples, connected to a computer. Measurements of the crack velocity were carried out with a rectilinear crack propagation and crack branching.