![Adopted database:
HDF5
What is HDF5 and why did we choose it ?
3
For moreinfo:
The HDF Group, "Hierarchical Data Format, version 5," 1997-2017. [Online]. Available: http:/ / www.hdfgroup.org/ HDF5/](https://image.slidesharecdn.com/presentationasdeasoft-170704220303/85/STKO-A-revolutionary-toolkit-for-OpenSees-7-320.jpg)
STKO - A revolutionary toolkit for OpenSees
- 1. STKO A revolutionary toolkit for opensees Massimo Petracca massimo.petracca@unich.it m.petracca@asdea.net Francesca Candeloro f.candeloro@asdea.net Guido Camata g.camata@unich.it ASDEA Soft info@asdeasoft.net
- 2. Outline ◉Introduction and motivations ◉STKO: pre and post processor ◉Adopted database: HDF5 ◉Proposed file format: MPCO ◉New recorder class: MPCORecorder ◉Numerical applications ◉Conclusions and future works
- 3. Introduction and motivations Introduction and motivations 1
- 4. Introduction and motivations ◉Simulation of real- life structures Real- life complex models High- volume output data Heterogeneous results ◉Efficient layout of complex data in the database ◉Lack of visualization tools for results on fibers and in general 1D element ◉Interaction with the database via scripting Extrapolation Manipulation New custom results
- 5. STKO: pre and post processor A brief description of the STKO pre and post processor 2
- 6. STKO: pre and post processor ◉Pre-processor CAD importer, modeler and mesher Based on OpenCascade library (https://www.opencascade.com/) Scripting interface for linking with the external solver ◉Post-processor HDF5- based output database (https://www.hdfgroup.org/) Standard plot tools Advanced plot tools for beam elements Scripting interface for interaction with the Database
- 7. Adopted database: HDF5 What is HDF5 and why did we choose it ? 3 For moreinfo: The HDF Group, "Hierarchical Data Format, version 5," 1997-2017. [Online]. Available: http:/ / www.hdfgroup.org/ HDF5/
- 8. Adopted database: HDF5 Why HDF5 ? ◉Opensource (BSD license) library ◉Completely portable file format ◉No limit on the number or size of data objects in the collection ◉Runs on a range of computational platforms, from laptops to massively parallel systems ◉Several languages: C, C++, Fortran90, Java, Python ◉Parallel I/O
- 9. Adopted database: HDF5 What does a HDF5 file look like? ◉Hierarchical structure ◉Groups (directories) ◉Datasets (data) ◉Attributes (metadata)
- 10. Proposed file format: MPCO How to lay out complex data 4
- 11. Proposed file format: MPCO What do we need to store in our output file? ◉Model (+ model stages) Nodes Elements Geometries + standard and custom integration rules Sections and materials + assignments ◉Results Results stored on nodes Results stored on elements On element nodes On integration points On sub- integration points (fibers)
- 12. Model Stages: ◉Changes in the original model ◉Added/removed elements/nodes From OpenSees Structural Examples Infill Wall Model and Element Removal M. Selim Gunay and Khalid M. Mosalam, University of California, Berkeley http:/ / opensees.berkeley.edu/ wiki/ index.php/ Infill_Wall_Model_and_Element_Removal
- 13. Each model stage group contains: ◉Model informations ◉Results
- 14. Each model group contains: ◉Nodes ◉Elements Geometry Standard and/or custom integration rules ◉Section assignments Element and gauss assignments Fiber data Fiber materials Gauss points Fibers
- 15. The result group contains: ◉Results on nodes ◉Results on elements
- 16. The node result contains: ◉1Dataset with selected node IDs ◉1Data group ◉1Dataset for each time step
- 17. The element result contains: ◉Groups based on: Element type Size of connectivity Type of integration rule Type of cross sections ◉Each group contains: Metadata group with: Number of components + labels Node or gauss ID Multiplicity 1Dataset with selected element IDs 1Data group 1Dataset for each time step
- 18. With the proposed layout we can obtain a large variety of plots:
- 19. New recorder class: MPCORecorder Implementation of the HDF5 based recorder in OpenSees 5
- 20. New recorder class: MPCORecorder What element results are supported? Everything, but the element MUST use the OPS_Stream! MPCORecorder heavily relies on OPS_Stream
- 21. Numerical applications Some examples using STKO for post- processing 6
- 23. Visualization of frame elements, gauss plot and fiber plot
- 24. Visualization of shell elements, gauss plot and fiber plot
- 25. Element removal, fiber plot, chart data extraction From OpenSees Structural Examples Infill Wall Model and Element Removal M. Selim Gunay and Khalid M. Mosalam, University of California, Berkeley http:/ / opensees.berkeley.edu/ wiki/ index.php/ Infill_Wall_Model_and_Element_Removal
- 26. Conclusions ◉HDF5 hierarchical structure is well suited for storing complex data ◉A proper layout of complex data allows for advanced visualization tools such as fiber- section plot ◉Future implementations Parallel IO: now MPCORecorder works with OpenSees and OpenSeesMP (via partitioned databases), not with OpenSeesSP Get local axes info from OpenSees
- 27. Any questions ? Thanks! Massimo Petracca massimo.petracca@unich.it m.petracca@asdea.net Francesca Candeloro f.candeloro@asdea.net Guido Camata g.camata@unich.it ASDEA Soft info@asdeasoft.net
- 28. Credits Special thanks to all the people who made and released these awesome resources for free: ◉Presentation template by SlidesCarnival ◉Photographs by Unsplash