# Convert Abaqus 3D Solid SG to SwiftComp

## Problem Description

Given a 3D solid mesh built in Abaqus (`sg33_cube.inp`), convert it to a
SwiftComp 2.1 input file for 3D solid homogenization using the `SD1` model.

## Solution

The `.inp` file does not state `sgdim` or `model_type`. There are two
ways to supply them, one script each; both write the same SwiftComp input.

### Method 1: API arguments

The SG parameters are arguments of {func}`sgio.convert`.

```{literalinclude} ../../../examples/convert_abaqus_sg3d_to_sc/run_1_api.py
:language: python
```

On the command line:

```{code-block}
sgio convert sg33_cube.inp sg33_cube_sc21.sg -ff abaqus -tf swiftcomp -tfv 2.1 -d 3 -m sd1
```

### Method 2: SG manifest

`sg33_cube.sg.json` (see {doc}`/ref/sg_manifest`) references the `.inp`
file and holds the same parameters, so the conversion takes no SG arguments:

```{literalinclude} ../../../examples/convert_abaqus_sg3d_to_sc/sg33_cube.sg.json
:language: json
```

```{literalinclude} ../../../examples/convert_abaqus_sg3d_to_sc/run_2_manifest.py
:language: python
```

On the command line:

```{code-block}
sgio convert sg33_cube.sg.json sg33_cube_sc21.sg -ff sg_manifest -tf swiftcomp -tfv 2.1
```

## Result

A SwiftComp 2.1 input file `sg33_cube_sc21.sg` is written and ready for homogenization.

```{figure} ../../../examples/convert_abaqus_sg3d_to_sc/pyvista.png
:align: center
:width: 80%

PyVista preview of the converted three-dimensional Structure Gene.
```

## File List

* {download}`sg33_cube.inp <../../../examples/convert_abaqus_sg3d_to_sc/sg33_cube.inp>` — Abaqus 3D cube mesh
* {download}`sg33_cube.sg.json <../../../examples/convert_abaqus_sg3d_to_sc/sg33_cube.sg.json>` — SG manifest for the Abaqus input
* {download}`run_1_api.py <../../../examples/convert_abaqus_sg3d_to_sc/run_1_api.py>` — conversion with SG arguments
* {download}`run_2_manifest.py <../../../examples/convert_abaqus_sg3d_to_sc/run_2_manifest.py>` — conversion through the SG manifest
* {download}`pyvista.png <../../../examples/convert_abaqus_sg3d_to_sc/pyvista.png>` — generated PyVista screenshot