Model generators

Model generators are used to create and extend the model. They are used to create the mesh, the material points, the cells, the elements, and sets.

2D generators

edelweissmeshfree.generators.rectangulargridgenerator.generateModelData(model, journal, name='rectangular_grid', x0=0.0, y0=0.0, h=1.0, l=1.0, nX=10, nY=10, firstCellNumber=1, firstNodeNumber=1, cellProvider=<class 'str'>, cellType=<class 'str'>, nodesPerCell=4)[source]

Generate a structured grid of nodes and cells.

Parameters:

model (FEModel) – The model to which the grid should be added.
journal (Journal) – The journal instance for logging purposes.
name (str) – The name of the grid.
x0 (float) – The x-coordinate of the origin.
y0 (float) – The y-coordinate of the origin.
h (float) – The height of the grid.
l (float) – The length of the grid.
nX (int) – The number of elements along the x-axis.
nY (int) – The number of elements along the y-axis.
cellProvider (str) – The name of the cell provider class.
cellType (str) – The type of the cell.
firstNodeNumber (int) – The first node number.
nodesPerCell (int) – The number of nodes per cell.

edelweissmeshfree.generators.rectangularbsplinegridgenerator.generateModelData(model, journal, **kwargs)[source]

A mesh generator, for rectangular geometries and structured quad meshes:

    <-----l----->
     nX elements
     __ __ __ __
    |__|__|__|__|  A
    |__|__|__|__|  |
    |__|__|__|__|  | h
    |__|__|__|__|  | nY elements
  | |__|__|__|__|  |
  | |__|__|__|__|  V
x0|_____
  y0

nSets, elSets, surface : ‘name’_top, _bottom, _left, _right, … are automatically generated

Datalines:

edelweissmeshfree.generators.rectangularmpgenerator.generateModelData(model, journal, name='rectangular_grid', x0=0.0, y0=0.0, h=1.0, l=1.0, nX=10, nY=10, firstMPNumber=1, mpProvider=None, mpType=None, thickness=1.0, material=None)[source]

Generate a structured rectangular grid of material points.

Parameters:

model (MPMModel) – The model instance.
journal (Journal) – The Journal instance for logging purposes.
name (str) – The name of the mesh.
x0 (float) – The origin at x axis.
y0 (float) – The origin at y axis.
h (float) – The height of the body.
l (float) – The length of the body.
nX (int) – The number of material points along x.
nY (int) – The number of material points along y.
firstMPNumber (int) – The first material point number.
mpProvider (str) – The providing class for the MaterialPoint.
mpType (str) – The type of MaterialPoint.
thickness (float) – The thickness of the material point.
material (str) – The material of the material point.

Returns:

The updated model.

Return type:

MPMModel

A mesh generator, for rectangular geometries and structured quad meshes:

    <-----l----->
     nX elements
     __ __ __ __
    |__|__|__|__|  A
    |__|__|__|__|  |
    |__|__|__|__|  | h
    |__|__|__|__|  | nY elements
  | |__|__|__|__|  |
  | |__|__|__|__|  V
x0|_____
  y0

nSets, elSets, surface : ‘name’_top, _bottom, _left, _right, … are automatically generated

Datalines:

edelweissmeshfree.generators.rectangularcellelementgridgenerator.generateModelData(model, journal, **kwargs)[source]

Generate a structured grid of nodes and cells.

Parameters:

model (FEModel) – The model to which the grid should be added.
journal (Journal) – The journal instance for logging purposes.
name (str) – The name of the grid.
x0 (float) – The x-coordinate of the origin.
y0 (float) – The y-coordinate of the origin.
h (float) – The height of the grid.
l (float) – The length of the grid.
nX (int) – The number of elements along the x-axis.
nY (int) – The number of elements along the y-axis.
firstNodeNumber (int) – The first node number.
nodesPerCell (int) – The number of nodes per cell.
mpType (str) – The type of the material point.
mpClass (str) – The name of the material point class.
thickness (float) – The thickness of the material point.
mpNumberStart (int) – The first material point number.
cellelementProvider (str) – The name of the cell element provider class.
cellelementType (str) – The type of the cell element.
material (dict) – The material definition.

3D generators

edelweissmeshfree.generators.boxgridgenerator.generateModelData(model, journal, name='box_grid', x0=0.0, y0=0.0, z0=0.0, h=1.0, l=1.0, d=1.0, nX=10, nY=10, nZ=10, firstNodeNumber=1, cellClass=None, cellType=None, nodesPerCell=8)[source]

Generate a structured box grid of material points.

Parameters:

model (MPMModel) – The model instance.
journal (Journal) – The Journal instance for logging purposes.
name (str) – The name of the mesh.
x0 (float) – The origin at x axis.
y0 (float) – The origin at y axis.
z0 (float) – The origin at z axis.
h (float) – The height of the body.
l (float) – The length of the body.
d (float) – The depth of the body.
nX (int) – The number of material points along x.
nY (int) – The number of material points along y.
nZ (int) – The number of material points along z.
firstNodeNumber (int) – The first node number.
cellClass (str) – The providing class for the Cell.
cellType (str) – The type of Cell.
nodesPerCell (int)

Returns:

The updated model.

Return type:

MPMModel

edelweissmeshfree.generators.boxbsplinegridgenerator.generateModelData(model, journal, name='boxgrid', x0=0.0, y0=0.0, z0=0.0, l=1.0, h=1.0, d=1.0, nX=10, nY=10, nZ=10, order=1, firstNodeNumber=1, cellProvider=None, cellType=None)[source]

Generates a B-Spline grid of cells in a box.

Parameters:

model (MPMModel) – The model to which the grid will be added.
journal (Journal) – The journal instance for logging purposes.
name (str) – The name of the grid.
x0 (float) – The origin at x axis.
y0 (float) – The origin at y axis.
z0 (float) – The origin at z axis.
l (float) – The length of the box.
h (float) – The height of the box.
d (float) – The depth of the box.
nX (int) – The number of cells in x direction.
nY (int) – The number of cells in y direction.
nZ (int) – The number of cells in z direction.
order (int) – The order of the B-Spline basis functions.
firstNodeNumber (int) – The first node number.
cellProvider (type) – The providing class for the Cell.
cellType (str) – The type of Cell.

Returns:

The model with the added grid.

Return type:

MPMModel

edelweissmeshfree.generators.boxmpgenerator.generateModelData(model, journal, name='box_grid', x0=0.0, y0=0.0, z0=0.0, l=1.0, h=1.0, d=1.0, nX=10, nY=10, nZ=10, firstMaterialPointNumber=1, mpProvider=None, mpType=None, material=None)[source]

Generate a structured box grid of material points.

Parameters:

model (MPMModel) – The model instance.
journal (Journal) – The Journal instance for logging purposes.
name (str) – The name of the mesh.
x0 (float) – The origin at x axis.
y0 (float) – The origin at y axis.
z0 (float) – The origin at z axis.
h (float) – The height of the body.
l (float) – The length of the body.
nX (int) – The number of material points along x.
nY (int) – The number of material points along y.
nZ (int) – The number of material points along z.
firstMaterialPointNumber (int) – The first material point number.
mpProvider (str) – The providing class for the MaterialPoint.
mpType (str) – The type of MaterialPoint.
material (str) – The material of the material point.
d (float)

Returns:

The updated model.

Return type:

MPMModel

utitilty generators

edelweissmeshfree.generators.findclosestmp.generateModelData(mpmModel, journal, coordinates, storeIn)[source]

Find the mateiral point closest to a given coordinate and store it in a material point set in the model.

Parameters:

mpmModel (MPMModel) – The model instance.
journal (Journal) – The Journal instance for logging purposes.
coordinates (ndarray) – The coordinates for which the closest material point should be found.
storeIn (str) – The name of the material point set, in which the found material point is stored.

Returns:

The updated model.

Return type:

MPMModel