VERSAT-2D is a software package consisting of three computer programs, namely, VERSAT-2D Processor, VERSAT-S2D and VERSAT-D2D. These three components of VERSAT-2D function independently. Interactions among them take place through data files saved in a Windows Explorer file folder.
VERSAT-2D Processor is a Windows based graphic interface program. It serves as a pre and post processor for VERSAT-S2D and VERSAT-D2D. The program is used to generate a finite element mesh, define soil zones, assign material properties, define boundary conditions, assign pressure loads, and generate input data for VERSAT-S2D & VERSAT-D2D. The program can also display and plot results from analyses such as stresses, displacements, accelerations, pore-water pressures, and a deformed mesh.
VERSAT-S2D is a computer program for static 2D plane-strain finite element analyses of stresses, deformations, and soil-structure interactions. The static analyses can be conducted using stress-strain constitutive relationships from linear elastic model to elasto-plastic models, i.e., Mohr-Coulomb model and Von-Mises model. This program can also be used to compute or determine static pre-existing stresses for use in a subsequent dynamic finite element analysis. Main features of VERSAT-S2D are:
Linear elastic model; Von-Mises model;Mohr-Coulomb model; Stress level dependent stiffness parameters; External load applications; Staged construction by adding layers; Staged excavation by removing layers; Pore water pressure application; Calculation of stresses and deformations caused by strain-softening of soils; Simulation of sheet pile wall and anchors; Updated Lagrangian analysis; Factors of safety calculation; Gravity on and off ; Calculation of pre-existing stresses for use in a dynamic analysis using VERSAT-D2D; 4-node, 6-node and 8-node solid elements to represent soils; 2-node line elements to represent sheet pile walls (beam) or anchors (bar/truss); Use of any consistent units and sign conventions
VERSAT-D2D is a computer program for dynamic 2D plane-strain finite element analyses of earth structures subjected to dynamic loads from earthquakes, machine vibration, waves or ice actions. The dynamic analyses can be conducted using linear, or nonlinear, or nonlinear effective stress method of analysis. The program can be used to study soil liquefaction, earthquake induced deformation and dynamic soil-structure interaction such as pile-supported bridges. Main features of VERSAT-D2D are:
Application of horizontal (or horizontal and vertical) ground accelerations at the base, or horizontal outcropping ground velocities at a viscous/elastic base(Adv.Dyn); Application of a load-time-history at any nodal points; Global force equilibrium enforced at all time; Linear elastic model; Non-linear hyperbolic stress-strain model for sand; Non-linear hyperbolic stress-strain model for clay; Stress level dependent stiffness parameters; Effective stress model including dynamic pore water pressure; Three models for computing dynamic pore water pressure; Mohr-Coulomb failure criterion; Modified stiffness parameters by dynamic pore water pressure; Calculation of ground deformations caused by soil liquefaction; Calculation of factor of safety against liquefaction; Strain-softening but dilative silt model(Adv.Dyn); Simulation of sheet pile wall and anchors; Updated Lagrangian analysis; Gravity on and off; Free-field stress boundary; 4-node solid elements to represent soils; 2-node line elements to represent sheet pile walls (beam) or anchors (bar/truss); Use of any consistent units and sign conventions
