The Bauschinger effect in open-end thick-walled cylindrical pressure vessels

1Bastun, VN, Podil'chuk, IY
1S.P. Timoshenko Institute of Mechanics of the NAS of Ukraine, Kyiv
Dopov. Nac. akad. nauk Ukr. 2017, 11:24-29
Section: Mechanics
Language: Russian

The dependence of the Bauschinger effect measure in circular cylindrical thick-walled autofrettaged pressure vessels with one open end on the intensity of plastic strains under a proportional loading by internal pressure and torsion moment is studied. As an example, the Bauschinger effect measure is determined numerically for different ratios between hoop and tangential stresses. It is shown that the stressed state mode, which is characterized by the ratio of stresses, at small values of the anisotropy coefficient induced by the autofrettage weakly affects the Bauschinger effect measure. It increases with the anisotropy level. With the last being decreased, the Bauschinger effect diminishes.

Keywords: anisotropy, autofrettage, Bauschinger effect measure, open-end thick-walled pressure vessels
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