Implementation of topology optimization using openMDAO

@inproceedings{chung2018implementation,
  author = {Hayoung Chung and John T. Hwang and Justin S. Gray and Hyunsun A. Kim},
  title = {Implementation of topology optimization using openMDAO},
  booktitle = {2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference},
  year = {2018},
  doi = {10.2514/6.2018-0653},
  url = {https://doi.org/10.2514/6.2018-0653},
  note = {Metadata verification: Crossref DOI}
}