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GFAS – User manual
GFAS
Contents
Introduction
Introduction
Overview
Analysis capabilities
Mesh generation
Mesh generation
Introduction
Structured mesh generation
Structured mesh generation
The Quadrilateral Region
Mapping technique
Automatic meshing
Quadrilateral division
Delaunay triangulation
Region connectivity
Unstructured mesh generation
Mesh editing
Mesh editing
Index
Mesh refinement
Mesh refinement
Local mesh refinement
Global mesh refinement
Deleting meshes
Nodes renumbering
Transforming meshes (p-refinement)
Formulation of the element matrices and vectors for elasticity problem
Formulation of the element matrices and vectors for elasticity problem
Index
Equilibrium equations
Boundary conditions
Strain-Displacement Relations
A General Formula for the Stiffness Matrix
A General Formula for the Stiffness Matrix
Index
Plane strain
Plane stress
Axisymmetric case
Finite element types
Finite element types
Index
Constant strain triangle (T3)
Linear Strain Triangle (T6)
Linear Quadrilateral Element (Q4)
Quadratic Quadrilateral Element (Q8)
Numerical integration in finite elements
Stress calculation
Consistent element nodal loads
Consistent element nodal loads
Index
Body forces
Distributed forces
Initial stress/strain loads
Pore pressure loads
Excavation loads
Gravity loading
Assembly and storage strategy
Incorporation of boundary conditions
Incorporation of boundary conditions
Index
Explicit specification of BC's
Imposing prescribed displacements (Penalty method)
Elastic supports
Solution of equilibrium equations
Formulation of the beam-column elements
Formulation of the beam-column elements
Index
Bar or truss elements
Two-noded beam-column element
Joining beam-column elements to plane elements. Dissimilar elements.
Joining beam-column elements to plane elements. Dissimilar elements.
Index
Beam-column element connected to a plane element
Truss element connected to a plane element
Bolts elements
Bolts elements
Index
End anchored bolts
Fully bonded bolts
Liner elements
Geogrid elements
Nonlinear analysis formulation
Nonlinear analysis formulation
Inelastic stress-strain behavior
Inelastic stress-strain behavior
Index
Yield criterion
Flow rule
Hardening rule
Incremental stress-strain relations
Failure criteria
Failure criteria
Index
The Von-Misses criterion
Mohr-Coulomb and Tresca criterions
Elastic-plastic procedures
Elastic-plastic procedures
Index
Constant-stiffness method
Constant-stiffness method
Index
Generation of self-equilibrating body loads
Initial strain method
Initial stress method
Solution procedure
Tangent (variable)-stiffness method
Tangent (variable)-stiffness method
Index
Integration of the constitutive relations. Consistent tangent matrix
Solution procedure
Steady state analysis
Hydraulic boundary conditions
Initial conditions
Initial conditions
Index
Initial groundwater conditions
Initial geostatic stresses
Dynamic and seismic analysis
Staged constructions
Analysis types
Analysis types
Slope stability analysis
Slope stability analysis
Index
Factor of Safety (FOS) and Strength reduction factor (SRF)
Material properties
Slope collapse
Computational example
Bearing capacity analysis
Staged construction analysis
Tutorial & DXF
Bibliography
Recommended books
Geoapp
Geoapp
Index
Geoapp Section
Contact
Contact
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