<abstract xmlns="http://www.w3.org/1999/xhtml"><p>In this paper, the authors propose a studying method for the deformation that appears before crack of ductile materials using the Lode parameter determined by the numerical calculation applied on simple models, verified in previous studies. In order to highlight the influence of the Lode parameter, the tests were performed at simple but also at compound tests. The necessity of these studies lies in the fact that the acknowledged models (the use of the integral J, the critical stress intensity factor Kc or the CPCD method) do not fully explain the phenomenon of deformation before breaking the elasto-plastic materials. The tests were imagined under the form of sets. Each set of tests was performed on smooth specimens and on specimens with a notch radius of 0.5, 2, 4 and 10 mm. Also, each set of tests was performed for pure tensile and combined tensile-torque test.</p></abstract>

In this paper, the authors propose a studying method for the deformation that appears before crack of ductile materials using the Lode parameter determined by the numerical calculation applied on simple models, verified in previous studies. In order to highlight the influence of the Lode parameter, the tests were performed at simple but also at compound tests. The necessity of these studies lies in the fact that the acknowledged models (the use of the integral J, the critical stress intensity factor Kc or the CPCD method) do not fully explain the phenomenon of deformation before breaking the elasto-plastic materials. The tests were imagined under the form of sets. Each set of tests was performed on smooth specimens and on specimens with a notch radius of 0.5, 2, 4 and 10 mm. Also, each set of tests was performed for pure tensile and combined tensile-torque test.

Appreciation of Triaxiality Influence in Plastic Deformation Accompanying Ductile Rupture

Acta Universitatis Cibiniensis. Technical Series

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

In this paper, the authors propose a studying method for the deformation that appears before crack of ductile materials using the Lode parameter determined by...

Appreciation of Triaxiality Influence in Plastic Deformation Accompanying Ductile Rupture

Published Online: Jan 11, 2018

Page range: 82 - 88

DOI: https://doi.org/10.1515/aucts-2017-0011

Keywords
Lode’s angle, Lode’s parameter, triaxiality, tensile-torque test

© 2018

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Appreciation of Triaxiality Influence in Plastic Deformation Accompanying Ductile Rupture

Published Online: Jan 11, 2018

Page range: 82 - 88

DOI: https://doi.org/10.1515/aucts-2017-0011

KeywordsLode’s angle, Lode’s parameter, triaxiality, tensile-torque test

© 2018

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Lode’s angle, Lode’s parameter, triaxiality, tensile-torque test