@Article{cmes.2023.022523,
AUTHOR = {Kerati Suwanpakpraek, Baramee Patamaprohm, Sacharuck Pornpeerakeat, Arisara Chaikittiratana},
TITLE = {Finite Element Implementation of the Exponential Drucker–Prager Plasticity Model for Adhesive Joints},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {135},
YEAR = {2023},
NUMBER = {3},
PAGES = {1765--1778},
URL = {http://www.techscience.com/CMES/v135n3/50490},
ISSN = {1526-1506},
ABSTRACT = {<p>This paper deals with the numerical implementation of the exponential Drucker-Parger plasticity model in the commercial finite element software, ABAQUS, via user subroutine UMAT for adhesive joint simulations. The influence of hydrostatic pressure on adhesive strength was investigated by a modified Arcan fixture designed particularly to induce a different state of hydrostatic pressure within an adhesive layer. The developed user subroutine UMAT, which utilizes an associated plastic flow during a plastic deformation, can provide a good agreement between the simulations and the experimental data. Better numerical stability at highly positive hydrostatic pressure loads for a very high order of exponential function can also be achieved compared to when a non-associated flow is used.</p>
},
DOI = {10.32604/cmes.2023.022523}
}