<abstract xmlns="http://www.w3.org/1999/xhtml"><p>A method for calculating the ultimate true stresses arising in the walls of shells of revolution in the area of uniform plastic deformation is developed in the research. In order to derive the stability loss for the plastic deformation process the criterion of maximum load is taken as the basis, simple differential equations were solved. It has been shown analytically that the level of the boundary true stresses is much lower when the values of the principal stress ratios approach to 2 or 1/2 compared to the adjacent stress states.</p></abstract>

A method for calculating the ultimate true stresses arising in the walls of shells of revolution in the area of uniform plastic deformation is developed in the research. In order to derive the stability loss for the plastic deformation process the criterion of maximum load is taken as the basis, simple differential equations were solved. It has been shown analytically that the level of the boundary true stresses is much lower when the values of the principal stress ratios approach to 2 or 1/2 compared to the adjacent stress states.

Prediction of the Boundary States for Thin-Walled Axisymmetric Shells Under Internal Pressure and Tension Loads

Ternopil Ivan Puluj National Technical University

Automation of Technological Processes and Production Department

Information Science and Mathematical Modeling Department

Strojnícky časopis - Journal of Mechanical Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A method for calculating the ultimate true stresses arising in the walls of shells of revolution in the area of uniform plastic deformation is developed in the...

Prediction of the Boundary States for Thin-Walled Axisymmetric Shells Under Internal Pressure and Tension Loads

Published Online: May 13, 2020

Page range: 57 - 68

DOI: https://doi.org/10.2478/scjme-2020-0006

Keywords
large plastic deformations, true stresses, axisymmetric shells, complex stress state

© 2020 Kozbur Halyna et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Prediction of the Boundary States for Thin-Walled Axisymmetric Shells Under Internal Pressure and Tension Loads

Published Online: May 13, 2020

Page range: 57 - 68

DOI: https://doi.org/10.2478/scjme-2020-0006

Keywordslarge plastic deformations, true stresses, axisymmetric shells, complex stress state

© 2020 Kozbur Halyna et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
large plastic deformations, true stresses, axisymmetric shells, complex stress state