Труды Института механики им. Р.Р. Мавлютова
Электронный научный журнал | Electronic Scientific Journal
Proceedings of the Mavlyutov Institute of Mechanics
The article defines, both statically and dynamically, the location and size of a transverse notch on a vertical bar stretched by its own weight and the force applied at its lower end. Consideration is given only to the stress deformed state within the limits of elasticity for a thin bar. The notch simulates damages in the bar, among them the transverse open crack. Since the crack emerges as a result of the formation of a tiny nucleus, although not necessarily at the most stressed section, the notch is assumed to be in any place along the length of the bar.
vertical drill-bar string,
static stress deformed state,
forced and free longitudinal oscillations,