A non-isothermal consolidation model for gradient-based poroplasticity
Fecha
2015-04Autor
Mroginski, Javier Luis
Etse, Guillermo
Ripani, Marianela
Metadatos
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In this work, the thermodynamically consistent non-local model for concretes
subjected to high temperatures originally proposed by Ripani, et al (2014) [1] is extended,
in order to evaluate the failure behavior of partially saturated quasi brittle materials like
soils. This new formulation follows the gradient-based poroplastic theory proposed by
the authors [2], moreover, introduces the temperature as an additional variable of the
internal characteristic length. The non-local effect is achieved assuming that the internal
variables are the only ones of non-local character. Hence, both q and qα will be considered
as arguments in the free energy. On the other hand, in order to reproduce the softening
behavior of partially saturated soils the saturation degree as well as the confinement level
should be considered in the internal characteristic length calibration. Finally, the FE
implementation of this enriched constitutive theory with selective C1 and C0 interpolation
functions for the internal variables and the kinematic fields, respectively, is discussed.