<abstract xmlns="http://www.w3.org/1999/xhtml"><p>A systematic approach to measure the differences between Mohr-Coulomb (MC) and Drucker-Prager (DP) shear strength criteria used commonly in soil and rock mechanics is presented. It is shown that the DP criterion generates a shear strength between 0.6 and 3 times the MC strength, for the same friction angle and cohesion parameters. The appropriate conditions for obtaining equal shear strengths are given. Moreover, some new DP failure surfaces are proposed which minimize the differences relative to the MC predictions. The equivalence of the DP and MC criteria under plane strain conditions is also examined.</p></abstract>

A systematic approach to measure the differences between Mohr-Coulomb (MC) and Drucker-Prager (DP) shear strength criteria used commonly in soil and rock mechanics is presented. It is shown that the DP criterion generates a shear strength between 0.6 and 3 times the MC strength, for the same friction angle and cohesion parameters. The appropriate conditions for obtaining equal shear strengths are given. Moreover, some new DP failure surfaces are proposed which minimize the differences relative to the MC predictions. The equivalence of the DP and MC criteria under plane strain conditions is also examined.

A note on the differences between Drucker-Prager and Mohr-Coulomb shear strength criteria

Studia Geotechnica et Mechanica

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

A systematic approach to measure the differences between Mohr-Coulomb (MC) and Drucker-Prager (DP) shear strength criteria used commonly in soil and rock...

A note on the differences between Drucker-Prager and Mohr-Coulomb shear strength criteria

Article Category: Research Article

Published Online: Oct 20, 2018

Page range: 163 - 169

Received: Jan 31, 2018

Accepted: May 18, 2018

DOI: https://doi.org/10.2478/sgem-2018-0016

Keywords
Mohr-Coulomb, Drucker-Prager, elasto-plasticity, shear strength, plane strain conditions

© 2018 Marek Wojciechowski, published by Sciendo

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

A note on the differences between Drucker-Prager and Mohr-Coulomb shear strength criteria

Article Category: Research Article

Published Online: Oct 20, 2018

Page range: 163 - 169

Received: Jan 31, 2018

Accepted: May 18, 2018

DOI: https://doi.org/10.2478/sgem-2018-0016

KeywordsMohr-Coulomb, Drucker-Prager, elasto-plasticity, shear strength, plane strain conditions

© 2018 Marek Wojciechowski, published by Sciendo

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

Keywords
Mohr-Coulomb, Drucker-Prager, elasto-plasticity, shear strength, plane strain conditions