Abstract
A negative second order work, strain softening, is often noticed in contractant material like sensitive clays. Failure in such clays will lead to the formation of localized deformation zone of intense inelastic strain, known as shear band. Conditions, emergence and inclination of shear band has been very well demonstrated in past decades in different manners, however a definite thickness of shear band is still an open question due to several reasons. Mesh dependency, loss of ellipticity is another challenge associated with finite element analyses for strain softening clays. This paper covers a comprehensive review of classical theories of strain localization and associated limitation. Mesh dependency, ill-possed boundary value problem is addressed using finite element simulation examples and experimental results.
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Thakur, V., Nordal, S. & Grimstad, G. Phenomenological issues related to strain localization in sensitive clays. Geotech Geol Eng 24, 1729–1747 (2006). https://doi.org/10.1007/s10706-005-5818-z
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DOI: https://doi.org/10.1007/s10706-005-5818-z