Topology optimization (TO) was limited in use previously because of the challenges in manufacturing complex designs but has now become more feasible with the adaptation of additive manufacturing (AM) techniques. The growing interest in TO has sparked fresh research and development studies and it is being employed with specialist software. However, it is still necessary to comprehend how this approach, which is relatively new in comparison to conventional design methods, should be used with the software and how the software’s pre-processing steps affect the outcome. The present study utilizes Altair HyperWorks to do a TO benchmarking of a bracket, considering element size, material properties, manufacturing constraints (MCs), relative converge criteria (RCC). Moreover, the effects of them on the final objective function value (OFV), iteration number, solver time and remaining design space after optimization are investigated. Furthermore, the topology optimized part has ~ 62% lower volume and ~ 52.4% less support structure requirement than the initial model. The topology optimized part is manufactured by utilizing laser powder bed fusion (L-PBF) process and is measured by utilizing ATOS 3D Scanbox to investigate the warpage inhered by the L-PBF process nature. As an outcome the warpage occurred in the part is less than ± 0.2 mm.

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A Comprehensive Insight into Topology Optimization Through Benchmarking the Influencing Factors on a Demonstrator Aircraft Bracket Design

  • Baturalp Oguz,
  • Ozgur Poyraz,
  • Oguz Colak

摘要

Topology optimization (TO) was limited in use previously because of the challenges in manufacturing complex designs but has now become more feasible with the adaptation of additive manufacturing (AM) techniques. The growing interest in TO has sparked fresh research and development studies and it is being employed with specialist software. However, it is still necessary to comprehend how this approach, which is relatively new in comparison to conventional design methods, should be used with the software and how the software’s pre-processing steps affect the outcome. The present study utilizes Altair HyperWorks to do a TO benchmarking of a bracket, considering element size, material properties, manufacturing constraints (MCs), relative converge criteria (RCC). Moreover, the effects of them on the final objective function value (OFV), iteration number, solver time and remaining design space after optimization are investigated. Furthermore, the topology optimized part has ~ 62% lower volume and ~ 52.4% less support structure requirement than the initial model. The topology optimized part is manufactured by utilizing laser powder bed fusion (L-PBF) process and is measured by utilizing ATOS 3D Scanbox to investigate the warpage inhered by the L-PBF process nature. As an outcome the warpage occurred in the part is less than ± 0.2 mm.