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STKO
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GEOFORCE ONEInstallation
Manuals
Tutorials
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STKOBUY
PRICE TABLE
STKO (Scientific ToolKit for OpenSees) is a powerful pre and post processor and cutting-edge data visualization tool for Opensees. By using STKO a user can create a Tool Command Language (TCL) input file for Opensees and an output file readable by its graphic interface. The user can customize and manipulate with a Python-based scripting interface the model input and output to create customized engineering demand parameters and output data.
Post processing of shell results at gauss points and at through-the-thickness integration points (fibers).
Post processing of beam-column results by means of a fiber-section plot, that allows the user to visualize results such as strain/stress at each fiber of each gauss points of beam-column elements.
Meshing algorithms in STKO pre-processor. Global and local edge seed, unstructured and structured mesh algorithms, triangle/tetrahedron, quadrilateral/hexahedron, linear and quadratic interpolations.
Post processing of beam-column results by means of a gauss-point plot, that allows the user to visualize results such at each gauss points of beam-column elements.
STKO pre-processing for micro-modeling of masonry structures
STKO Seismic Isolation
Simulation of Damage Evolution of Pazzi Chapel in Florence, Italy.
| courtesy of Sabrina Giancola - master degree |
Post-processing of a soil-foundation-structure-interaction problem. Visualization of results on solid elements by means of a volume plot.
Example of absorbing boundaries using the VS3D4 element available in OpenSees.
Comparative study of different approches to simulate absorbing boundaries in soil-structure interaction problems.
3D Analysis of Soil-Pile interaction with contact elements.
Simulation SFSI (Soil Foundation Structure Interaction). Courtesy of Jenny Ramirez Calderon – PhD thesis
SFSI: Analysis of the boundary conditions and their application in the case study of a bridge | Autostrada BS-PD | courtesy of Luca Sallese - master degree |
… features advanced CAD modeling tools, import-export of common CAD file formats, geometry repair tools, and a comprehensive set of meshing algorithms.
… is easily customizable via a python-based scripting interface. So custom components can be easily specified and added to the standard document, to fit the end-user needs.
… can then produce input files for OpenSees with all the information inputed by the user.
CAD
Import-export of open file formats (STEP and IGES)
Curve modeling
Surface modeling
Solid modeling
Interface modeling
MESH
Order:
Linear | Quadratic
Quadratic-serendipity
Edge Seed:
Uniform by divisions
Uniform by size
Biased by size and bias factor
Biased by number and bias factor
Dual-biased by size and bias factors
Algorithms:
2D un-structured for triangles and quadrilaterals
3D un-structured for tetrahedrons
2D structured for triangles and quadrilaterals
3D structured for hexahedrons
PROPERTIES
Materials:
Uniaxial | nD
Sections:
Aggregator
Beam fiber-section
Shell layered-section
CONDITIONS
SP constraints
MP constraints
Loads
Uniform exitation pattern
Multi-support exitation pattern
ANALYSIS
Static
Transient
Eigenvalues
… features all common visualization algorithms (edge/surface color map, volume rendering, iso-lines, iso-surfaces, vector plots, etc..). Post processing also includes advanced visualization algorithms for beam/column and shell elements equipped with discretized (fiber) cross sections.
… is easily customizable via a python-based scripting interface. Therefore, results can be estracted and manipulated using custom python-scripts, allowing the end-user to produce custom information.
Finally, STKO uses an efficient opensource third-party database library for storing results, the HDF5 database library. The MPCORecorder is a new recorder class for OpenSees that allows OpenSees to write results data in the format required by STKO.
All these features in one Software: STKO, a revolutionary visualization toolkit for Opensees
FILE AND DATABASES
Save/Load existing post-processor files (restore plots, charts, etc.)
Import of one or multiple MPCO output databases
PLOTS
Deformed shape
Surface color map
Volume color map
Gauss-point plot
Beam/Shell fiber-section plot
Vector plot
Iso-surface plot
Streamlines
CHARTS
Extract data from database:
Extract data from nodes
Extract data from gauss points
Extract data from fibers
Create 2D Charts
CUSTOM
Python scripting interface
Add new user-defined components for pre-processing
Extend STKO built-in interfaces for OpenSees components