Open AccessA comparative analysis of the stress-strain state of disc specimens in assessing the structural strength of materials
Author(s) -
Л. Б. Цвик,
E. V. Zenkov
Publication year - 2022
Publication title -
engineering solid mechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 17
eISSN - 2291-8752
pISSN - 2291-8744
DOI - 10.5267/j.esm.2021.12.001
Subject(s) - sss* , structural engineering , principal stress , stress (linguistics) , materials science , stress–strain curve , finite element method , composite material , computer science , engineering , shear stress , linguistics , philosophy , artificial intelligence
A study of the stress-strain state (SSS) of disc specimens has been conducted when testing specimens with stress concentrators (grooves). The research has shown that the truncation of circular discs along two symmetrical chords makes it possible to change the type (the ratio of principal stresses) of SSS that occurs at the destruction site. Therefore, these specimens can be used to assess the structural strength of materials on standard single-drive testing machines, taking into account the real type of SSS that occurs in the bearing elements of machines. The results of numerical SSS modeling have been used to build the dependences of the SSS type and level on geometric parameters of specimens. Geometrical parameters can be chosen for a certain SSS type to assess both the static and fatigue strengths of materials used in the manufacture of bearing elements.