Open AccessDeformation of a pipeline element under cyclic loading by internal pressure
Author(s) -
M. V. Bоrоdіi,
Volodymyr Strzhalo,
М. P. Аdаmchuк,
Zahar Yaskovets,
S. G. Skakun,
I. K. Potapov
Publication year - 2021
Publication title -
progresivna tehnìka, tehnologìâ ta ìnženerna osvìta
Language(s) - English
Resource type - Journals
ISSN - 2409-7160
DOI - 10.20535/2409-7160.2021.xxii.232194
Subject(s) - internal pressure , materials science , deformation (meteorology) , pipeline (software) , structural engineering , work (physics) , asymmetry , stress (linguistics) , strain (injury) , mechanics , plasticity , composite material , engineering , physics , mechanical engineering , philosophy , quantum mechanics , medicine , linguistics
An experimental study of the strain of a rectilinear segment of a pipeline Du 200 made of steel 20 under cyclic loading by internal pressure was carry out. The tests were performed on a pneumohydraulic stand under conditions of flat stress, normal temperatures, and load cycle asymmetry with registration of circular and axial elastic-plastic strain. The aim of the work was to test an experimental technique for studying the effect of ratcheting (unilateral accumulation of plastic deformations) on real structural elements when changing the modes of cyclic loading. According to the results of the study, curves of cyclic deformation (ratcheting) of the pipe in the circular and axial direction on the basis 100 cycles were obtained.