Open AccessНакопление повреждений при статическом деформировании твердого тела регулярного строения: микротрещины, неотрелаксированные напряжения
Author(s) -
А.М. Лексовский,
Б.Л. Баскин,
Г.Н. Губанова,
В.Е. Юдин
Publication year - 2020
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/pjtf.2020.23.50351.18521
Subject(s) - dissipative system , redistribution (election) , non equilibrium thermodynamics , metastability , nonlinear system , relaxation (psychology) , mechanics , materials science , thermodynamics , classical mechanics , physics , statistical physics , psychology , social psychology , quantum mechanics , politics , political science , law
Using the methods of acoustic emission in the variant of linear location and internal friction, it is shown that when an initially equilibrium composition of the CFRP type is stretched, unrelaxed stresses accumulate in the places of intense microcrack formation. This is due to the incomplete completeness of the relaxation redistribution of the accumulated energy / elastic deformation by a nonlinear mechanism. The increasing level of unrelaxed stresses inevitably transforms the heterogeneous solid into a metastable state. As a result, the dissipative capacity of the system as a whole is reduced and the probability of a nonequilibrium crack appears.