Open Access

Table 4

Stress-based Dilatancy boundary models.

Model Author(s) Description
CDM Hampel (2012) In high stress differences of boundary, damage and dilatant changes are modeled as a function of creep strain. This model enables to consider effects of common and reverse transient creep (Hampel, 2012).
Gunther and Salzer Gunther and Salzer, 2007 This is a strain hardening model in which total deformation rate is a function of effective strain hardening (Gunther and Salzer, 2007).
Minkley and Muhlbauer Minkley and Mühlbauer, 2007 In this model, stress-strain relationship is modeled by a developed Burgers model in which deformation history is considered through a state variable. Also, this model includes a damage module to consider the damage changes, fracture and post failure (Minkley and Mühlbauer, 2007).
KIT Pudewills, 2007 This model applies elasto-visco-Plastic context to describe the total deformation rate (Pudewills, 2007).
Lubby2-MDCF Institut fur Unterirdisches Bauen, IUB In this model, total inelastic deformation rate in non-dilatant creep and dilatant creep are described by shear deformation and tensile deformation respectively (IUB).
Hou and Lux Hou and Lux, 1999 In this model, inelastic strain rate is considered through adaption of visco-plastic deformation in creep without volume changes, damage and healing resulting from dilatancy and compression respectively (Hou and Lux, 1999).

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