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54 lines
2.5 KiB
Markdown
54 lines
2.5 KiB
Markdown
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# ifc2ca
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Files and scripts for the use of [`Code_Aster`](https://code-aster.org) in IFC-driven FEM analyses
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### File Organisation
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#### Scripts:
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- [`ifc2ca.py`](ifc2ca.py): a python script to extract and create a `json` file from an `ifc` file
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- [`scriptSalome.py`](scriptSalome.py): a python script to run in the [`Salome-Meca`](https://www.code-aster.org/spip.php?article303) environment. Creates the geometry and the mesh of the structure
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- [`scriptCodeAster.py`](scriptCodeAster.py): a python script to create the input file (`.comm`) for Code_Aster
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#### Examples
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All examples are contained in a separate repository within the IfcOpenShell organization (Work In Progress).
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- `cantilever_01` (model created by Dion Moult)
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- `beam_01` (model created by Tandeep Singh)
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- `portal_01` (model created by buildingSmart)
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- `building-frame_01` (model created by Tandeep Singh)
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- `building_01`] (model created by Tandeep Singh)
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All example folders contain the following files:
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__Input:__
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- `{example_name}.ifc`: ifc file of the example
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- `{example_name}.json`: json data file of the example
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- `bldMesh.med`: mesh file exported from Salome_Meca after executing `scriptSalome`
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- `CA_input_00.comm`: command file generated from `scriptCodeAster`
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__Output:__
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- `result.mess`: message log file of the interpreted commands in Code_Aster
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- `result.rmed`: result file on the mesh of the structure to visualize in Salome_Meca
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---
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### Current Status
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_As of 22/03/20:_
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- Added beam and building examples
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- Added support for I sections and calculation of section properties if not provided (assuming fillet radius is zero)
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- Added support for surface members (shells)
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- Refactored the `ifc2ca.py` script
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- Added support for rigid links
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- Added advanced meshing script to correctly simulate connections and independent meshing of structural elements (no common nodes)
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_As of 26/02/20:_
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- Added portal example
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- Changed `section` to `profile` and added I profile
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- Modified material and profile schema with mechanical and common properties
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- Added geometry identification for point connection from representation
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- Added connections along with supports based on the number of elements a connection is applied to
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- Applied conditions with elastic stiffness values is still not implemented. Only True/False values are accepted.
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_As of 16/01/20:_
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- Only line geometries for structural elements and point geometries for supports are considered
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- The structure is analysed for gravity loads with a single linear static analysis
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