Formats and Model Types

Lookup tables for the identifiers passed to sgio.read(), sgio.write(), and sgio.convert().

File Formats

file_format	Versions	Dimension	Notes
vabs	4.0, 4.1	2D	cross-sectional analysis; beam models only
swiftcomp, sc	2.1, 2.2	1D, 2D, 3D	general structure gene analysis
abaqus	—	2D, 3D	.inp import; materials, sets, *Orientation
gmsh	2.2, 4.1	1D, 2D, 3D	mesh carrier; see SG-on-Gmsh Serialization
vtk, vtu	—	any	write only; mesh-only export for ParaView

Abaqus *Orientation support is limited to rectangular systems, defined by direct six/nine-value coordinates or by an element distribution, applied to the section’s element set. Other Abaqus orientation systems raise ValueError rather than being interpreted as rectangular.

Structural Model Types

model_type	Model	Applies to
BM1	Euler-Bernoulli beam	VABS, SwiftComp
BM2	Timoshenko beam	VABS, SwiftComp
PL1	Kirchhoff-Love plate/shell	SwiftComp
PL2	Reissner-Mindlin plate/shell	SwiftComp
SD1	Cauchy continuum (3D solid)	SwiftComp

Theory background for each model is in Material and Structural Models.

Model Space

For a 2D section embedded in 3D coordinates, model_space names the plane the section lies in: xy, yz, or zx. It controls how section coordinates are projected into solver coordinates on write.

Conversion Matrix

From \ To	VABS	SwiftComp	Abaqus	Gmsh
VABS	✓	✓	✓	✓
SwiftComp	✓	✓	✓	✓
Abaqus	✓	✓	✓	✓
Gmsh	✓*	✓*	✓*	✓

* Mesh data only unless the sidecar bundle supplies materials; see SG-on-Gmsh Serialization.

Supported Analysis Cells

Dimension	Cell types
2D	triangle, triangle6, quad, quad8, quad9
3D	solid cells matching the target SwiftComp model

vertex and line entities may exist in the source file but are not analysis elements; they are filtered out on export.