A robust return-map algorithm for general multisurface plasticity

• Published in: International journal for numerical methods in engineering
• Main Authors: Adhikary, Deepak P., Jayasundara, Chandana T., Podgorney, Robert K., Wilkins, Andy H.
• Format: Journal Article
• Language: English
• Published: United States Wiley 16.06.2016
• Subjects: geomechanics; GEOTHERMAL ENERGY; Kuhn-Tucker conditions; multisurface plasticity; return-map algorithm

Three new contributions to the field of multisurface plasticity are presented for general situations with an arbitrary number of nonlinear yield surfaces with hardening or softening. A method for handling linearly dependent flow directions is described. A residual that can be used in a line search i...