Abstract
This paper presents an implicit integration scheme based on the closest-point projection method for an unconventional plasticity model, the extended subloading surface model. A cutting-plane algorithm has already been formulated for the model. However, the present paper aims to introduce an alternative closest-projection return mapping scheme for resolving the elasto-plastic problem by improving the accuracy of the similarity center variable. Numerical examples are examined for monotonic and cyclic loading conditions to validate the results against a forward Euler method. The speed and accuracy of the resolution technique are determined, showing the local and global convergence rates and the iso-error map for the numerical algorithm.
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Fincato, R., Tsutsumi, S. Closest-point projection method for the extended subloading surface model. Acta Mech 228, 4213–4233 (2017). https://doi.org/10.1007/s00707-017-1926-0
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DOI: https://doi.org/10.1007/s00707-017-1926-0