Since MR167 (Metafor v3593), there are two kind of thermal load elements depending on whether the load is applied on the volume element (volumetric source) of on the boundary of the elements.
All of them are implemented on the same framework and have the same options.
The first step consists in defining an ElementProperties, as
prp = ElementProperties(typeEl) prp.put(param, value) prp.put(vecParam, values) prp.append(vecParam, value)
where
typeEl | desired element (for example Pressure[2|3]DElement - see below) |
param | name of the property associated to the element (e.g. NIP) |
vecParam | name of the vector property associated to the element (e.g. MATERIALS) |
value | value of the corresponding property (e.g. the Number of Integration Points) |
values | array of valuse of the corresponding vector property (e.g. material indexes) |
The interaction used for thermal boundary/source elements is a LoadingInteraction. It is defined as:
load = LoadingInteraction(no) load.push(gObject1) load.push(gObject2) ... load.addProperty(prp) interactionset.add(load)
where
no | number of the Interaction |
gObject1, gObject2 | meshed geometric entity where the boundary conditions are applied (one part of the boundary or on part of the mesh) |
prp | Properties of boundary condition elements to be generated |
Source Elements are defined on Volumic mesh where Boundary Elements are defined on boundary of the mesh.
Boundary elements have to be defined in the LoadingInteraction on the boundary of the mesh.
TmBoundary2DElement are defined on lines (wires) of a 2D quadrangular mesh.TmBoundary3DElement are defined on sides (skins) of a 3D hexahedral mesh.TriangleTmBoundary3DElement are defined on sides (skins) of a 3D tetrahedral mesh.| Name | Description | Dependency |
|---|---|---|
STIFFMETHOD | Method used to compute the stiffness matrix = STIFF_ANALYTIC : analytic matrix (default)= STIFF_NUMERIC : numerical matrix | - |
MATERIALS | Array of numbers of ThermalBoundaryMaterial to consider | - |
NIP | Number of integration points by direction (default : 2) for TriangleTmBoundary3DElement : Total Number of integration points (default : 1) | - |
Boundary elements have to be defined in the LoadingInteraction on the boundary of the mesh where the TM2 formalism is used (second order thermal field on a first order geometrical mesh)
Tm2Boundary2DElement are defined on lines (wires) of a 2D quadrangular mesh.Tm2Boundary3DElement are defined on sides (skins) of a 3D hexahedral mesh.TriangleTm2Boundary3DElement are defined on sides (skins) of a 3D tetrahedral mesh.| Name | Description | Dependency |
|---|---|---|
STIFFMETHOD | Method used to compute the stiffness matrix = STIFF_ANALYTIC : analytic matrix (default)= STIFF_NUMERIC : numerical matrix | - |
MATERIALS | Array of numbers of ThermalBoundaryMaterial to consider | - |
NIP | Number of integration points by direction (default : 3) for TriangleTm2Boundary3DElement : Total Number of integration points (default : 3) | - |
Source elements have to be defined in the LoadingInteraction on a volumetric mesh.
Be careful that they can be associated to any ThermalBoundaryMaterial that can have no physical meaning (e.g. defining a ConvectionMaterial in a mesh not on its surface), but could be a work around to apply heat to a model… Up to now, there a no physical consistency test…
TmSource2DElement are defined on sides (skins) of a 2D quadrangular mesh.TmSource3DElement are defined on volumes of a 3D hexahedral mesh.TriangleTmSource3DElement are defined on volumes of a 3D tetrahedral mesh.| Name | Description | Dependency |
|---|---|---|
STIFFMETHOD | Method used to compute the stiffness matrix = STIFF_ANALYTIC : analytic matrix (default)= STIFF_NUMERIC : numerical matrix | - |
MATERIALS | Array of numbers of ThermalBoundaryMaterial to consider | - |
NIP | Number of integration points by direction (default : 2) for TriangleTmSource3DElement : Total Number of integration points (default : 1) | - |
Source elements have to be defined in the LoadingInteraction on a volumetric mesh where the TM2 formalism is used (second order thermal field on a first order geometrical mesh)
Be careful that they can be associated to any ThermalBoundaryMaterial that can have no physical meaning (e.g. defining a ConvectionMaterial in a mesh not on its surface), but could be a work around to apply heat to a model… Up to now, there a no physical consistency test…
Tm2Source2DElement are defined on sides (skins) of a 2D quadrangular mesh.Tm2Source3DElement are defined on volumes of a 3D hexahedral mesh.TriangleTm2Source3DElement are defined on volumes of a 3D tetrahedral mesh.| Name | Description | Dependency |
|---|---|---|
STIFFMETHOD | Method used to compute the stiffness matrix = STIFF_ANALYTIC : analytic matrix (default)= STIFF_NUMERIC : numerical matrix | - |
MATERIALS | Array of numbers of ThermalBoundaryMaterial to consider | - |
NIP | Number of integration points by direction (default : 3) for TriangleTm2Boundary3DElement : Total Number of integration points (default : 3) | - |