model

This package provides the core data structures of COMPAS FEA2, enabling the definition and construction of finite element models. It includes classes for models, parts, nodes, elements, materials, sections, boundary conditions, loads, constraints, releases, and groups.

Model

Model

Class representing an FEA model.

Parts

Part	Deformable part.Base class for Parts.
RigidPart	Rigid part.Base class for Parts.

Nodes

Node	Class representing a Node object.

Elements

BeamElement	A 1D element that resists axial, shear, bending and torsion.
HexahedronElement	A Solid cuboid element with 6 faces (extruded rectangle).
MassElement	A 0D element for concentrated point mass.
MembraneElement	A shell element that resists only axial loads.
ShellElement	A 2D element that resists axial, shear, bending and torsion.
SpringElement	A 0D spring element.
StrutElement	A truss element that resists axial compressive loads.
TieElement	A truss element that resists axial tensile loads.
TetrahedronElement	A Solid element with 4 or 10 nodes.
TrussElement	A 1D element that resists axial loads.

Releases

BeamEndPinRelease	Assign a pin end release to a compas_fea2.model.BeamElement.
BeamEndSliderRelease	Assign a slider end release to a compas_fea2.model.BeamElement.

Constraints

BeamMPC	Beam MPC that constraints axial translations and rotations.
TieConstraint	Tie constraint between two surfaces.
TieMPC	Tie MPC that constraints axial translations (e.g., along the length of the member).

Materials

Concrete	Elastic and plastic-cracking Eurocode-based concrete material.
ConcreteDamagedPlasticity	Damaged plasticity isotropic and homogeneous material.
ConcreteSmearedCrack	Elastic and plastic, cracking concrete material.
ElasticIsotropic	Elastic, isotropic and homogeneous material
ElasticOrthotropic	Elastic, orthotropic and homogeneous material
ElasticPlastic	Elastic and plastic, isotropic and homogeneous material.
Steel	Bi-linear steel with given yield stress.
Stiff	Elastic, very stiff and massless material.
Timber	Base class for Timber material (elastic orthotropic behaviour).
UserMaterial	User Defined Material.

Sections

AngleSection	Uniform thickness angle cross-section for beam elements.
BoxSection	Hollow rectangular box cross-section for beam elements.
CircularSection	Solid circular cross-section for beam elements.
HexSection	Hexagonal hollow section.
ISection	Equal flanged I-section for beam elements.
MembraneSection	Section for membrane elements.
PipeSection	Hollow circular cross-section for beam elements.
RectangularSection	Solid rectangular cross-section for beam elements.
ShellSection	Section for shell elements.
SolidSection	Section for solid elements.
SpringSection	Section for use with spring elements.
StrutSection	For use with strut elements.
TieSection	For use with tie elements.
TrapezoidalSection	Solid trapezoidal cross-section for beam elements.
TrussSection	For use with truss elements.

Boundary Conditions

ClampBCXX	A pinned nodal displacement boundary condition clamped in XX.
ClampBCYY	A pinned nodal displacement boundary condition clamped in YY.
ClampBCZZ	A pinned nodal displacement boundary condition clamped in ZZ.
FixedBC	A fixed nodal displacement boundary condition.
GeneralBC	Customized boundary condition.
PinnedBC	A pinned nodal displacement boundary condition.
RollerBCX	A pinned nodal displacement boundary condition released in X.
RollerBCXY	A pinned nodal displacement boundary condition released in X and Y.
RollerBCXZ	A pinned nodal displacement boundary condition released in X and Z.
RollerBCY	A pinned nodal displacement boundary condition released in Y.
RollerBCYZ	A pinned nodal displacement boundary condition released in Y and Z.
RollerBCZ	A pinned nodal displacement boundary condition released in Z.

Initial Conditions

InitialStressField	Stress field.
InitialTemperatureField	Field class for fields implementing mechanical boundary conditions.

Groups

ElementsGroup	Base class for elements groups.
FacesGroup	Base class elements faces groups.
NodesGroup	Base class nodes groups.
PartsGroup	Base class for parts groups.

Base Classes

As user, you never interact with the following classes. They define the basic behavior of each component in FEA2.

_BeamEndRelease	Assign a general end release to a compas_fea2.model.BeamElement.
_BoundaryCondition	Base class for all boundary conditions.
_Connector	Base class for connectors.
_Constraint	Base class for constraints.
_Element	Initialises a base Element object.
_Element1D	Element with 1 dimension.
_Element2D	Element with 2 dimensions.Initialises a base Element object.
_Element3D	A 3D element that resists axial, shear, bending and torsion.
_Group	Base class for all groups.
_InitialCondition	Base class for all predefined initial conditions.
_Interaction	Base class for all interactions.
_Material	Basic Material
_Section	Base class for sections.
_Section1D	Base class for 1D sections.
_Section2D	Base class for 2D sections.
_Section3D	Base class for 3D sections.