latture / bravais

Tools for analyzing trusses based on Bravais lattices

Bravais Package

This package contains tools required to analyze truss structures based off of Bravais lattices using Abaqus. It is divided into 6 sections:

1. unit_cells contains all of the elementary unit cells that can be meshed in three dimensions.
2. mesher takes the unit cell and creates a 3D mesh of specified dimensions.
3. bcs finds nodes and returns information regarding the necessary boundary conditions for a given analysis.
4. inp_creator creates .inp files to be analyzed via Abaqus.
5. abaqus executes Abaqus using the command line to analyze and extract data.
6. post_process takes nodal dispalcement and force data and calculates elastic properties.

Usage

First compile the extension modules: Navigate to the ~/bravais/bravais directory and execute python setup.py build_ext --inplace. This will compile the cpp_utils and assign_major_axes extension modules. A module can be used by importing the required tools, i.e. from bravais import unit_cells, mesher if a mesh needs to be created. Example scripts that create input files, run the FE calculations in Abaqus, and analyze the results are provided in the examples folder.

Contributor(s)

• Ryan Latture