Geotechnical

DIANA helps you not only in understanding, but also in predicting and controlling the interaction between ground, water, and structures.

Comprehensive material models for soil, rock, and sand 

Geotechnical engineers face a wide range of materials when analyzing soil and rock, especially when predicting their interaction with man-made structures. DIANA offers an extensive library of constitutive models for applications such as foundations, embankments, tunnels, excavations, slope stability, mines, and dams. Users are not restricted to the material models within DIANA; you can also add user-supplied material parameters, making DIANA as flexible as needed for your projects.

The complete solution for soil-structure interaction

The analysis capabilities for pore-pressure and consolidation, groundwater flow, earthquake and liquefaction problems are some of the most advanced available on the market.

Essential for the accurate analysis of small and large projects, geotechnical engineers can depend on DIANA to perform single or multiple parallel analyses in an efficient, structured, and logical workflow.

You don’t have to be a dedicated geotechnical or structural engineer to carry out analyses with DIANA – the range of material models and analysis functionalities ensures the lines can be crossed and specialisms combined.

Special features for Geotechnical

Analysis features

  • In-situ Stress ( Ko procedure/gravity loading/pre-stress) and Pore-pressure Initialisation
  • Construction staged analysis
  • Drained /undrained analysis
  • Seepage analysis (steady state / transient)
  • Saturated or partially saturated flow
  • Consolidation analysis (full coupled stress-flow analysis)
  • Pressure dependent degree of saturation
  • Freely moving phreatic surfaces
  • Porosity or saturation dependent permeability
  • Deformation dependent density and porosity
  • Dynamic (linear and nonlinear) and liquefaction analysis
  • Special (embedded) pile elements with nonlinear pile shaft and toe interfaces
  • Anchors, nails, and rock bolt modelling
  • Geotextiles
  • Strength reduction analysis (phi-c)
  • Engineering liquefaction

Material models - suitable for soil & rock

  • Mohr-Coulomb, Tresca
  • Drucker-Prager, Von Mises
  • Transversely Isotropic
    Duncan-Chang
  • Hoek-Brown
  • Jointed Rock
  • Modified Cam-Clay
  • Jardine (London clay)
  • Modified Mohr-Coulomb (Cap model)
  • Classic Brick
  • Special Interface Models
  • User supplied subroutine

Dynamic analysis & liquefaction

  • Eigenvalue analysis (eigenfrequencies, eigenmodes, participation factors, effective masses)
  • Direct frequency response analysis
  • Modal frequency response analysis
  • Spectral response analysis (ABS, SRSS, and CQC modal combinations)
  • Linear and nonlinear time domain analysis (total, transient and steady state, solution)
  • Various time integration methods, e.g. Newmark,
  • Wilson-theta, Runge-Kutta
  • Hybrid Frequency-time domain analysis (steady state solution)
  • Fluid-structure interaction
  • Multi-directional base acceleration loads
  • Prescribed nodal acceleration loads
  • Distributed mass elements (2D line elements + 3D surface elements)
  • Bounding/boundary elements for far field behavior (2D line elements + 3D surface elements)
  • Viscous, structural, and continuous damping
  • Specified or calculated initial conditions
    Consistent or lumped mass and/or damping matrices
  • Towhata-Iai liquefaction model (2D models and largely un-drained conditions)
  • Nishi liquefaction model (for 2D/3D, partially drained conditions, arbitrary shearing direction)
  • Bowl liquefaction model (for 2D/3D, partially drained conditions, horizontal shearing)
  • User-supplied liquefaction models (USRLIQ subroutine)
We provide a wide range of flexible licensing modules and subscription plans
for advanced calculations.
Our sales team is always more than happy to discuss your requirements and can create individualized proposals based on your specific needs.