tessToPy 0.0.12

My package description

tessToPy

Overview

tessToPy is a python package for representing a tessellated structure generated by Neper (https://neper.info/). This tessellation representation can be combined with a python representation of the discretized structure and used to write input files for finite element analysis (FEA). The primary function of the code is to regularize a periodic tessellation. The regularization tries to remove short edges from the structure, as short edges could be detremental to the overall quality of a FEA mesh.

A unregularized and regularized tessellation is shown below:

Unregularized structure with edges to be deleted	Regularized structure with edges deleted

The effect of regularization on the edge length distribution in a 400 cell tessellation is shown below:

Getting started

This package can be installed with

$ pip install tessToPy

The tessellation is loaded as an object by

tess = tessToPy.PeriodicTesselation(tessellation.tess)

The tessellation is regularized by

tess.regularize(n=len(tess.edges))

and can be written to a condensed .tess file by

tess.write(new_file_name)

The tessellation can also be meshed (with gmsh, must be installed), by calling

tess.mesh2D(elem_size)

where elem_size is the target length of the elements along an edge.

The file original_tessellation_processing.py is compatible with the FoamModeling project, which has not been updated. This can be used to generate LS-DYNA input files for modeling foam structures. Please seen Characterization and modeling of the mechanical behavior of polymer foam by Daniel Morton for further context.

License

See LICENSE.md for license information (MIT license).

Citation

This software was used as part of the PhD thesis Characterization and modeling of the mechanical behavior of polymer foam by Daniel Morton, which can be used as a reference.