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Topology optimization with ToOptix

Current version

  • Only 3D-FEM support
  • Heat Transfer
  • Static load case
  • Material will change only in young module and conductivity
  • Filter selects only the element around the filter object

Installation

  • Install python 3.xx
  • Download ToOptix

General information

  • Start this program in a user directory so Blender should be for example on the desktop
  • If you want to start Tooptix in "C:Programms\Blender Foundation ..." you need administrator rights (not reccomended)
  • So i would suggest you should take a copy of blender and then use it on the desktop or some other user access folder
  • (Optional) create a environment variable for Calculix (ccx)

Blender Installation

  • Check if import statement of run_optimization.py is: from .TopologyOptimizer.OptimizationController import OptimizationController
  • Copy your ToOptix Folder and paste it into ...\Blender Foundation\Blender\2.79\scripts\addons
  • Start Blender and activate the addon (type = mesh)

Python / PyCharm Installation

  • Check if import statement of run_optimization.py is: from TopologyOptimizer.OptimizationController import OptimizationController

  • Open the folder with pycharm and just start your optimization

  • Change file paths in "run_optimization.py"

  • Change optimization properties "run_optimization.py"

  • Create new cases for CalculiX "test.inp" ....

Example:

from run_optimization import run_optimization

cpus = 4
opti_type = "seperated"
# no design space is used until redefinition
sol_type = ["no_design_space", "static"]
files = ["no_design_space.inp", "testinp\Cylinder_Mesh.inp"]
max_iteration = 20
vol_frac = 0.3
penal = 3.0
matSets = 10
weight_factors = [3.0]
workDir = "work"
solverPath = "ccx"
run_optimization(penal,  matSets, opti_type, sol_type,
                                      weight_factors, max_iteration, vol_frac,
                                      files, workDir, solverPath, cpus)

Output

  • STL File in a specific folder for every optimizaiton step

Licence

GNU GENERAL PUBLIC LICENSE Version 2, June 1991