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- Title
Design of an aircraft engine bracket using stress-constrained bi-directional evolutionary structural optimization method.
- Authors
Wu, Yanfa; Qiu, Wenke; Xia, Liang; Li, Wenbiao; Feng, Kai
- Abstract
This work improves our previous stress-constrained topology optimization method (Fan et al., in Struct Multidisc Optim 59:647–658, 2019) and provides an application of the improved method to a typical aircraft engine bracket design problem. The original method was built upon the bi-directional evolutionary structural optimization (BESO) method with an extension to account for stress constraints. In this work, we first improve the method by means of a more efficient and versatile self-adaptive scheme for the determination of the Lagrange multiplier. The improved method is then applied for the design of a typical aircraft engine bracket considering multiple practical load conditions. The resulting bracket topology from stress-constrained design is further smoothed and detailed using basic CAD (Computer-Aided Design) primitives. Numerical results show that the reconstructed bracket design evidently outperforms than the original bracket design in terms of weight, stiffness, and strength.
- Subjects
AIRPLANE motors; STRUCTURAL optimization; STRAINS &; stresses (Mechanics); LAGRANGE multiplier; COMPUTER-aided design; CONSTRAINED optimization
- Publication
Structural & Multidisciplinary Optimization, 2021, Vol 64, Issue 6, p4147
- ISSN
1615-147X
- Publication type
Article
- DOI
10.1007/s00158-021-03040-9