The FoamGeo module
The FoamGeo module creates digital 3D models of regular (Kelvin cells) and random foam structures, based on a statistical description of cell sizes, cell shapes and cell orientations.
The regular and random foams can be closed pore foams or open pore foams (sponges).
The digital model is a detailed 3D microstructure of a foam which can be visualized and allows the kind of close analysis only possible from a µCT-scan.
New foams can be designed by changing the underlying statistical description and their material properties can be simulated through computations.
The properties of the new foam can be compared to those of existing products and the foam’s performance optimized for many applications.
Starting with complex random distributions of cell volume, cell shape, and cell orientation FoamGeo creates digital 3D models of random open cell foams (sponges) or closed cell foams.
Among others, the FoamGeo module can model foams, where the size of the cells changes over the height of the structure, or spatially anisotropic foams. FoamGeo also models regular foams as Kelvin structures.
Model of a closed cell foam
2D SEM view of the closed cell foam
Model of a random open cell foam
2D SEM view of the open cell foam
- Modelling of open cell metal foam.
- Modelling of closed cell metal foam.
- Modelling of acoustic foams.
- Modelling of insulation materials, such as closed cell polyethylene foam.
The GeoDict Base package is needed for basic functionality.
The ExportGeo module can be used to export the generated structures as 3D image (*.raw), as surface triangulation (*.stl) for CAD-programs, or as direct simulation in Fluent / Abaqus.
- Some of the material properties that can be computed for the resulting 3D structure models of porous nonwoven or composites using other GeoDict modules are:
|Pore size distribution, base weight distribution||PoroDict and MatDict|
|Flow resistivity, permeability and pressure drop||FlowDict|
|Effective elastic properties||ElastoDict|
|Large deformations, plastic effects, damage and failure||ElastoDict|
|Effective Diffusivity and tortuosity||DiffuDict|
|Effective thermal and electrical conductivity||ConductoDict|
|Filter efficiency and filter life time||FilterDict-Media and FilterDict-Element|