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|Title:||Elastoviscoplastic modelling with distorted isotaches and swelling for constant strain rate and incremental loading||Authors:||Vergote, TA
|Issue Date:||1-Sep-2021||Publisher:||Wiley||Citation:||Vergote, TA, Leung, CF, Chian, SC (2021-09-01). Elastoviscoplastic modelling with distorted isotaches and swelling for constant strain rate and incremental loading. International Journal for Numerical and Analytical Methods in Geomechanics 45 (13) : 1920-1933. ScholarBank@NUS Repository. https://doi.org/10.1002/nag.3248||Abstract:||A novel elastoviscoplastic model is proposed to improve the modelling of the one-dimensional unloading response of soils. Creep is modelled as an isotache process, but with the possibility to incorporate distortion of the isotaches after unloading. Upon unloading, swelling develops as a transient superimposed process that enables the sequential occurrence of swelling and creep as observed in experiments. The model features a flexible reference isotache to improve the fit to real laboratory tests. The model is implemented with full hydro-mechanical coupling and enables simulation of both load-controlled and strain rate-controlled stress paths. The model is calibrated with a laboratory test with a complex stress path including constant rate of strain, incremental loading and relaxation stages.||Source Title:||International Journal for Numerical and Analytical Methods in Geomechanics||URI:||https://scholarbank.nus.edu.sg/handle/10635/210437||ISSN:||03639061
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