EXPERIMENTAL IDENTIFICATION OF A POTENTIALLY NEW PHYSICAL PHENOMENON OF FORMATION OF A "DOUBLE" YIELD POINT WHEN LOADING A TESTED TUBULAR PLASTIC ELEMENT BY CONCENTRATED AXISYMMETRIC TRANSVERSE FORCES
UDC: 539.3/6(075.8)
DOI: 10.33285/1999-6934-2021-6(126)-17-21
Authors:
MIRONOV ANDREY A.1,
GROMYKO ALEXANDER N.
1
1 National University of Oil and Gas "Gubkin University", Moscow, Russian Federation
Keywords: "double" yield point, tubular plastic element, tubular plastic shock absorber, axisymmetric transversely applied forces, four-link hinge, elastic-plastic deformation
Annotation:
The article considers the main results of theoretical and full-scale experiment on static loading of a tubular plastic element by concentrated transversely applied forces. As a result of obtaining separate experimental data, a number of diagrams subject to testing of tubular elements with clearly marked so-called "double" yield points in the wP1 plane, and less expressed in the wP2 plane were revealed. The data obtained indicate significant discrepancies in the expected and obtained results of field experiments and can claim to identify a new physical phenomenon that is not considered in the course of the classical theory of elasticity and plasticity.
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