Capabilities of current versions of nonlinear stress analysis programs from Itasca Consulting Group,

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Capabilities of current versions of nonlinear
stress analysis programsfrom Itasca Consulting
Group,Minneapolis

• Michael A. Coulthard
• M.A. Coulthard Associates Pty. Ltd., Melbourne,
  AustraliaConsultants in computational
  geomechanicsAgents for Itasca software in
  Australasia

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Programs

• Three groups of programs - one 2D, one 3D
• FLAC and FLAC3D nonlinear continuum
• UDEC and 3DEC nonlinear discontinuum
• PFC2D and PFC3D particle flow codes
• Educational versions of 2D codes
• Regularly updated - available from website

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FLAC and FLAC3D

• nonlinear continuum mechanics, large strains
• transient porous flow, by itself or coupled
• structural elements, interfaces
• FISH programming language
• options thermal, creep, dynamics, two-phase
  flow (FLAC only), C UDM

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FLAC example pit slope failure at Ok Tedi mine
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FLAC3D example undermining Cataract Tunnel
shaft
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UDEC and 3DEC

• nonlinear discontinuum mechanics of jointed rock
• large displacements
• transient flow in joints
• structures - cables, beams, liner (UDEC only)
• FISH programming language
• options Barton-Bandis (UDEC) thermal,
  dynamics, structures, UDM (3DEC)

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UDEC example flexural toppling failure of pit
slope
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3DEC example Escondida pit geological
structures
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PFC2D and PFC3D

• micromechanical analysis of geomaterials and
  particulate systems
• clump logic, generalised walls
• dynamic loads, fracture propagation, gas flow
• particle flow caving bulk handling
• FISH programming language
• options thermal, UDM, parallel processing (3D)

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PFC3D example interaction between 4 drawpoints
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PFC3D example bulk material handling