Topology Optimization Design and Experimental Research of a 3D-Printed Metal Aerospace Bracket Considering Fatigue Performance
| Autor: | Gong Peng, Wang Qianglong, Yi Yu, Shi Yincheng, Liu Zhenyu, Chong Wang, Chen Yisheng |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
QH301-705.5 Computer science QC1-999 02 engineering and technology Fixture computer.software_genre Automotive engineering Computer Science::Robotics COMSOL 0203 mechanical engineering Computer Aided Design General Materials Science Biology (General) Aerospace fatigue testing QD1-999 Instrumentation topology optimization Stress concentration Fluid Flow and Transfer Processes Spacecraft Computer simulation business.industry Physics Process Chemistry and Technology Bracket Topology optimization General Engineering Engineering (General). Civil engineering (General) 021001 nanoscience & nanotechnology Computer Science Applications Computer Science::Other Chemistry 020303 mechanical engineering & transports TA1-2040 0210 nano-technology business computer additive manufacturing |
| Zdroj: | Applied Sciences Volume 11 Issue 15 Applied Sciences, Vol 11, Iss 6671, p 6671 (2021) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11156671 |
| Popis: | In the aerospace industry, spacecraft often serve in harsh operating environments, so the design of ultra-lightweight and high-performance structures is a major requirement in aerospace structure design. In this article, a lightweight aerospace bracket considering fatigue performance was designed by topology optimization and manufactured by 3D-printing. Considering the requirements of assembly with a fixture for fatigue testing and avoiding stress concentration, a reconstructed model was presented by CAD software before manufacturing. To improve the fatigue performance of the structure, this article proposes the design idea of abstracting the practiced working condition of the bracket subjected to cycle loads in the vertical direction via a multiple load-case topology optimization problem by minimizing compliance under a variety of asymmetric extreme loading conditions. Parameter sweeping was used to improve the computational efficiency. The mass of the new bracket was reduced by 37% compared to the original structure. Both numerical simulation and the fatigue test were implemented to support the validity of the new bracket. This work indicates that the integration of the proposed topology optimization design method and additive manufacturing can be a powerful tool for the design of lightweight structures considering fatigue performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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