Category Numerical analysis (soil)
Publisher  Cambridge University 
Platform DOS
Status Commercial
Description CRISP-90 is a finite element program incorporating critical state models of soil behaviour. Types of analysis: undrained, drained or fully coupled (Biot) consolidation analysis of 3D or 2D plane strain or axisymmetric (with axisymmetric loading) solid bodies. Soil models: anisotropic elasticity, inhomogeneous elasticity (properties varying with depth), critical state soil models (Cam clay, modified Cam clay) and elastic-perfectly plastic models (with Tresca, von Mises, Mohr-Coulomb or Drucker-Prager yield/failure surfaces). Element types: linear strain triangle, cubic strain triangle, linear strain quadrilateral and the 20 noded brick element (with extra pore pressure degrees of freedom for a consolidation analysis), beam, bar and slip elements for 2D plane strain analysis. Non-linear techniques: incremental (tangent stiffness) approach, options for updating nodal coordinates with progress of analysis. Boundary conditions: element sides can be given prescribed incremental values of displacements or excess pore pressures, loading applied as nodal loads or pressure loading on element sides. Automatic calculation of loads simulating excavation or construction when elements are removed or added. Free format input. Stop - restart facility.
Data formats supported None stated
Supplier in United Kingdom  Cambridge University 

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