3DEC - Features

  • Discontinuous medium modeled as an assemblage of convex polyhedra or concave polyhedra (formed by joining together convex polyhedra); blocks may be rigid or deformable
  • Discontinuities treated as boundary conditions between blocks
  • Motion along discontinuities governed by linear and non-linear force-displacement relations for movements in both the normal and shear direction
  • Material models include: elastic, anisotropic, Mohr-Coulomb, Drucker Prager, bilinear plasticity, strain softening, creep, and user-defined
  • Modeling attributes may include absorbing boundaries and wave input for fully dynamic response; "null" blocks for excavation and backfill simulation; structural elements with general coupling to blocks
  • Extensive, fast interactive menu-based 3D OpenGL on-screen graphics. Available plots include: joint structure; block structure; displacement and velocity vectors and contours; joint plane displacements and stresses; structural element displacements and stresses; and, fluid flow apertures and velocities. Hard copy graphics are available in several industry standard formats
  • Utilities include a preprocessor that reads AutoCAD files and outputs 3DEC data files for polyhedra generation; tunnel generator and statistically-based joint-set generator
  • Built-in programming language (FISH) provides powerful flexibility to customize analyses
  • Explicit time marching solution that provides realistic path-dependent post peak failure behavior in joints and plastic zones
  • Modeling "infinite domain" problems using inner/outer region coupling and automatic radially-graded mesh generation
  • Effective stress calculation performed using pore-pressure gradients
  • Joint fluid flow with thermal and mechanical coupling
  • Analytic and numerical thermal calculations with mechanical and fluid coupling
  • Structural elements with cables, beams, and liners
  • Single precision, double precision, and 64bit versions are supplied
  • Automatic mesh generation in fully deformable blocks
  • Automatic time step calculation