Experimental study of the characteristics of metal elastoplastic elements of anti-shock protection systems
Abstract
Experimental study of the characteristics of metal elastoplastic elements of anti-shock protection systems
Incoming article date: 28.02.2018The article presents the results of experimental studies of alternating torsion under a rigid loading regime, during which the features of the behavior of materials under such loading are revealed. The study of deformation diagrams in the sequence of load cycles and under loading with a stochastic sequence of intermediate unloadings of the sample is carried out. In this case, external force and deformation were measured, followed by recalculation into tangential stresses and the relative twist angle. It is established that the hysteresis loop of the first loading cycle differs considerably in shape from the subsequent cycles, but after three or four loads, the dimensions and shape of the loop in all cases stabilize. When loaded with intermediate discharges, small random loops do not go beyond the main (limiting) hysteresis loop, but are inside it, and the inner and outer branches are similar curves
Keywords: torsion, deformable in the elastoplastic region, rigid loading regime, pattern deformation pattern, loading cycle, energy absorbing element, hysteresis loop