Card image

Software Products

Non-Linear Structural Elements

FLAC3D

FLAC3D 9 introduces new non-linear structural elements for ground support for beams and piles/rockbolts and for shells, geogrids, and liners. Simple plastic hinges have been supplemented with a numerical integration scheme.

BEAM-TYPE STRUCTURES

  • The beam-type plastic constitutive models update the internal element forces by integrating the internal stress over the beam volume using a numerical integration scheme.
  • The plasticity is induced by axial and bending deformations; twisting deformation induces an elastic response.
  • The beam may have either a rectangular or circular cross section.
  • Integration points are distributed throughout the volume of the beam elements.
  • There are three beam plastic constitutive models, each of which is a one-dimensional version of the corresponding 3D model used by the zones:
    • von Mises (steel beams)
    • Mohr Coulomb (concrete beams)
    • Strain Softening/Hardening Mohr Coulomb (concrete beams)

The following commands are for an rectangular cross-section aluminum ally beam:

struct beam cmodel assign von-mises

struct beam cmodel plastic-integration rectangular cross-section rectangular layout 3 5 3

struct beam property direction-y (0,1,0) young 68e9 poisson 0.33 strength-yield 270e6 modulus-plastic 0.0; 6061-T6 Al alloy

LEARN MORE

SHELL-TYPE STRUCTURES

  • The plastic constitutive models update the internal element forces by integrating the internal stress over the shell volume using a numerical integration scheme.
  • There are a group of integration points distributed throughout the volume of each shell element.
  • There are three shell plastic constitutive models, each of which is a plane-stress version of the corresponding 3D model used by the zones:
    • von Mises (steel shells)
    • Mohr Coulomb (concrete shells)
    • Strain Softening/Hardening Mohr Coulomb (concrete shells)
  • Plasticity is provided by the DKT, CST and DKT-CST finite elements.

LEARN MORE

Order
Software Support
Latest News
  • Thank You to our Summer Interns ITASCA Minneapolis is lucky to have welcomed nine amazing and dedicated summer interns in our...
    Read More
  • Introducing IMAT: Transforming Mining Analysis Solutions Introducing IMAT: Revolutionizing mining analysis with advanced geotechnical modeling and seismic data integration....
    Read More
  • ITASCA Unveils XSite 4.0: Advancing Hydraulic Fracturing Simulation ITASCA announces the launch of XSite 4.0, a groundbreaking advancement in hydraulic fracturing simulation software....
    Read More
Upcoming Events
26 Aug
FLAC3D V9.1 and Griddle V2.0 2024
... Read More
17 Sep
MassMin
Held once every four years, MassMin unites global experts to tackle the industry's most pressing sustainability challenges. MassMin pro... Read More
22 Sep
SMRI Fall 2024
The Solution Mining Research Institute (SMRI) was established in 1965 as a venue for the solution mining and underground storage indust... Read More