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GEO5

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Elastic Regions

Frame "Elastic regions" contains table of defined elastic regions.

Input of elastic regions is identical to standard input of interfaces.

When loaded by stress reaching yield point the soil exhibits deformation which pertains also after unloading. This persistent deformation is termed plastic strain and can be modeled by standard models such as the Mohr-Coulomb or Drucker-Prager models or by the advanced models such as the Cam clay.

When we want to suppress the evolution of plastic strain in chosen area and construction stage we can use the "Elastic regions" feature. Elastic regions are specified in given stage by a polygon. Each element that - at least partially - falls within this region allows for elastic strains only.

Frame "Elastic regions"

Elastic regions affect only the behavior of:

  • Mohr-Coulomb model
  • Modified Mohr-Coulomb model
  • Drucker-Prager model

The behavior of other material models remains unaffected.