BHoM GSA object relations

The following outlines what BHoM type that corresponds to each of the GSA types supported

Elements

BHoM type	GSA type	Notes	Implementation
Bar	Beam Bar Tie Strut	BarFEAType.Flexural -> Beam BarFEAType.Axial -> Bar BarFEAType.TensionOnly -> Tie BarFEAType.CompressionOnly -> Strut	Create Read Update Delete
Node	Node		Create Read Update Delete
FeMesh	Tri3 Quad4	Creates one element per mesh face When read from model, will create one FEMesh per element Three noded face -> Tri3 Four noded face -> Quad4	Create Read Update Delete
RigidLink	Link	Will create one link element for each slave node	Create Read Update Delete
Panel	NotSupported	GSA does not contain a mesher, hence panels need to be meshed and turned into an FEMesh before being pushed.	Create Read Update Delete
Surface	NotSupported	GSA does not contain a mesher, hence Surfaces need to be meshed and turned into an FEMesh before being pushed.	Create Read Update Delete

Properties

BHoM type	GSA type	Notes	Implementation
Material	Material	See material type for more details	Create Read Update Delete
SteelSection	CAT/STD section type	see Section Properties for more details	Create Read Update Delete
ConcreteSection	CAT/STD section type	see Section Properties for more details	Create Read Update Delete
TimberSection	CAT/STD section type	see Section Properties for more details	Create Read Update Delete
AluminiumSection	CAT/STD section type	see Section Properties for more details	Create Read Update Delete
GenericSection	CAT/STD section type	see Section Properties for more details	Create Read Update Delete
ExplicitSection	CAT/EXP section type	see Section Properties for more details	Create Read Update Delete
CableSection	CAT/EXP section type	Will be created as an explicit section, and there by read out as such for a general case see Section Properties for more details.	Create Read Update Delete
CompositeSection	NotSupported		Create Read Update Delete
ConstantThickness	Shell		Create Read Update Delete
LoadingPanelProperty	Load Panel		Create Read Update Delete
Waffle	NotSupported		Create Read Update Delete
Ribbed	NotSupported		Create Read Update Delete
LinkConstraint	Link Property		Create Read Update Delete

Material type

The BHoM materials will be converted to the following types and get the following enums set:

BHoM Material	GSA Material Model	GSA Material Type	Notes	Implementation
Aluminium	Elastic isotropic	Aluminium		Create Read Update Delete
Steel	Elastic isotropic	Steel		Create Read Update Delete
Concrete	Elastic isotropic	Concrete		Create Read Update Delete
Timber	Elastic orthotropic	Wood		Create Read Update Delete
GenericIsotropic	Elastic isotropic	N/A		Create Read Update Delete
GenericOrthotropic	Elastic orthotropic	N/A		Create Read Update Delete

Materials in GSA with any other material type will be pulled out as GenericIsotropic or GenericOrthotropic depending on the material model.

Section Properties

When pushing a section property, the adapter first tries to create a catalogue section (CAT) based on the name of the section. Bear in mind here that this will trump the numerical parameters of the section, that is, if the Section Name is equivalent to a catalogue section in GSA, the geometrical properties of the section being pushed will be ignored.

If the creation of a catalogue section fails the toolkit will do slightly different things, depending on the section property used.

• Explicit and Cable sections will be turned into explicit section (EXP)
• Concrete and Steel sections will be turned into Standard Section (STD)

For the standard sections (STD) some properties will be ignored. This will be true for both creating and reading, these properties are:

1. Any corner, fillet or toe radius
2. Any weld size

As the catalogue name will differ from code to code, only the STD representation is shown in the table below. As stated above, the ignored properties in the notes does not apply to the catalogue sections.

BHoM Type	GSA Type	Notes	Implementation
AngleProfile	STD R	Toe and fillet radius ignored	Create Read Update Delete
BoxProfile	STD RHS	Inner and outer corner radius ignored	Create Read Update Delete
ChannelProfile	STD CH	Toe and fillet radius ignored	Create Read Update Delete
CircleProfile	STD C		Create Read Update Delete
FabricatedBoxProfile	STD RHS	1. GSA does not support different flange thicknesses. If different an error will be thrown 2. Weld size ignored	Create Read Update Delete
FabricatedISectionProfile	STD I STD GI	1. STD I for equal flange sections, STD GI for others 2. Weld size ignored	Create Read Update Delete
FreeFormProfile	NotImplemented		Create Read Update Delete
GeneralisedFabricatedBoxProfile	NotImplemented		Create Read Update Delete
ISectionProfile	STD I	Toe and fillet radius ignored	Create Read Update Delete
KiteProfile	NotSupported		Create Read Update Delete
RectangleProfile	STD R	Corner radius ignored	Create Read Update Delete
TSectionProfile	NotSupported		Create Read Update Delete
TubeProfile	STD CHS		Create Read Update Delete
ZSectionProfile	NotSupported		Create Read Update Delete

Loading

BHoM Type	GSA Type	Notes	Implementation
Loadcase	Load case		Create Read Update Delete
LoadCombinations	Analysis Task + Analysis Case	Will create one Analysis Task of a specified type with one Analysis Case in it, matching the combination in the BHoM case.	Create Read Update Delete
GravityLoad	Gravity Load		Create Read Update Delete
PointForce	Node Load	Will create one load per each non-zero component in the Force Vector and the same for the Moment vector	Create Read Update Delete
PointDisplacement	Applied Displacement	Will create one load per each non-zero component in the Translation Vector and the same for the Rotation vector	Create Read Update Delete
PointAcceleration	Not Implemented		Create Read Update Delete
PointVelocity	Not Implemented		Create Read Update Delete
BarUniformlyDistributedLoad	Beam load - Uniform	Will create one load per each non-zero component in the Force Vector and the same for the Moment vector	Create Read Update Delete
BarVaryingDistributedLoad	Beam load - Tri-Linear	Will create one load per each non-zero component in the Force Vector and the same for the Moment vector	Create Read Update Delete
BarPointLoad	Beam load - Point	Will create one load per each non-zero component in the Force Vector and the same for the Moment vector	Create Read Update Delete
BarPrestressLoad	Beam Pre-stress	Offsets will be ignored, not yet implemented	Create Read Update Delete
BarTemperatureLoad	Beam Thermal	Only uniform temperature supported	Create Read Update Delete
AreaUniformalyDistributedLoad	Face load - uniform	Will create one load per each non-zero component in the Pressure Vector	Create Read Update Delete
AreaTemperatureLoad	Not Implemented		Create Read Update Delete

Results

BHoM Type	GSA Type	Default Axis	Notes	Implementation
NodeReaction	Nodal Result - Reaction	Global		Read
NodeDisplacement	Nodal Result - Displacements	Global		Read
BarForce	Beam Forces and Moments	Local		Read
BarDeformation	Not Implemented	Local		Read
BarDisplacements	Beam Displacements	Global		Read
BarStress	Beam Stresses	Local		Read
BarStrain	Beam Strains	Local	Only axial strain extracted	Read
MeshResults	Not Implemented	-	Mesh results not yet implemented	Read
GlobalReactions	Total Reactions	Global	Will be taken as the sum of the reactions at Restraints, Spring Supports, Ground Springs and Soild Supports	Read
ModalDynamics	Global Results - Dynamic Summary	-		Read