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Elastoplastic analysis of cylindrical cavity problems in geomaterials. (English) Zbl 0916.73038

The authors apply a large strain elastoplastic analysis to the problem on expansion and contraction of cylindrical cavity in an infinite medium. The analysis employs non-associated deformation-type theories for Mohr-Coulomb and Drucker-Prager hardening solids. In particular, these theories are applied to triaxial compression test in order to determine the material parameters of particular materials (like sandstone or shale). Sample numerical results are presented, simulating the hole closure of a thick-walled cylinder under external hydrostatic pressure and the elastoplastic response of an internally presurized cavity.

MSC:

74L10 Soil and rock mechanics
74C15 Large-strain, rate-independent theories of plasticity (including nonlinear plasticity)
74C20 Large-strain, rate-dependent theories of plasticity
74C99 Plastic materials, materials of stress-rate and internal-variable type
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References:

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