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Three-dimensional structural topology optimization of aerial vehicles under aerodynamic loads








BROWSE_DETAIL_CREATORS: Oktay, Erdal (Author), Akay, Hasan U. (Author), Şehitoğlu, Onur T. (Author),


BROWSE_DETAIL_PUBLICATION_IDENTIFIERS: Kaynağın tam metnine ulaşmak için URL’ ye tıklayınız.



Structural topology optimization; Aerial vehicle structural design; Parallel CFD; Mesh coupling; Code coupling; Parallelized solvers


    A previously developed density distribution-based structural topology optimization algorithm coupled with a Computational Fluid Dynamics (CFD) solver for aerodynamic force predictions is extended to solve large-scale problems to reveal inner structural details of a wing wholly rather than some specific regions. Resorting to an iterative conjugate gradient algorithm for the solution of the structural equilibrium equations needed at each step of the topology optimizations allowed the solution of larger size problems, which could not be handled previously with a direct equation solver. Both the topology optimization and CFD codes are parallelized to obtain faster solutions. Because of the complexity of the computed aerodynamic loads, a case study involving optimization of the inner structure of the wing of an unmanned aerial vehicle (UAV) led to topologies, which could not be obtained by intuition alone. Post-processing features specifically tailored for visualizing computed topologies proved to be good design tools in the hands of designers for identifying complex structural components.





    BROWSE_DETAIL_TAB_REFERENCES[1]H.A. Eschenauer, N. OlhoffTopology optimization of continuum structures: a reviewAppl Mech Rev, 54 (4) (2001), pp. 331–390View Record in Scopus | Full Text via CrossRef | Citing articles (1)[2]M.P. Bendsoe, N. KikuchiGenerating optimal topologies in structural design using a homogenization methodComput Method Appl Mech Eng, 71 (2) (1988), pp. 197–224Article | PDF (2255 K) | View Record in Scopus | Citing articles (2427)[3]M.P. Bendsoe, O. SigmundTopology optimization – theory, methods, and applicationsSpringer-Verlag, Heidelberg, Germany (2003)[4]T. Borvall, J. PeterssonLarge-scale topology optimization in 3D using parallel computingComput Method Appl Mech Eng, 190 (2001), pp. 6201–6229[5]K. Vemaganti, W.E. LawrenceParallel methods for optimality criteria-based topology optimizationComput Method Appl Mech Eng, 194 (2005), pp. 3637–3667Article | PDF (972 K) | View Record in Scopus | Citing articles (17)[6]Rao JS, Kiran S, Chandra S, Kamesh JV, Padmanabhan MS. Topology optimization of aircraft wing. America’s hyperworks technology conference (HTC), Novi, MI; 2008.[7]Krog L, Tucker A, Kemp M, Boyd R. Topology optimization of aircraft wing box ribs. The altair technology conference. Michigan State University, Management Education Center, Troy, MI; 2004.[8]K. Maute, G.W. ReichIntegrated multidisciplinary topology optimization approach to adaptive wing designJ Aircraft, 43 (1) (2006), pp. 253–263View Record in Scopus | Full Text via CrossRef | Citing articles (65)[9]G.P. Guruswamy, P. ObayashiStudy on the use of high-fidelity methods for aeroelastic optimizationJ Aircraft, 41 (3) (2004), pp. 616–619View Record in Scopus | Full Text via CrossRef | Citing articles (13)[10]E. Oktay, H.U. Akay, O. MerttopcuogluParallelized structural optimization and CFD coupling for design of aircraft wingsComput Fluids, 49 (2011), pp. 141–145Article | PDF (1028 K) | View Record in Scopus | Citing articles (7)[11]CAEeda: Computer-aided engineering for engineering design and analysis; 2013. .[12]Baddi A, Akay HU, Oktay E. SINeda: a parallel coupling interface program, Report No: EDA-TR-2005-011; 2005.[13]MUMPS: A multifrontal massively parallel solver. User’s Guide. A public domain package based on public domain software developed during the Esprit IV European project PARASOL, 1996–1999; 2009. .[14]PETSc: A portable, extensible toolkit for scientific calculations. User’s Manual. Argonne National Laboratory, USA; 2011. .[15]E. Oktay, H.U. Akay, A. UzunA parallelized 3D unstructured euler solver for unsteady aerodynamicsJ Aircraft, 40 (2) (2003), pp. 348–354View Record in Scopus | Full Text via CrossRef | Citing articles (8)[16]Oktay E, Akay HU. A flow analysis program: FAPeda’. EDA-TR-2004-002; 2004.[17]Spalart PR, Allmaras SR. A one-equation turbulence model for aerodynamic flows. AIAA Paper 92-0439; 1992.[18]Anderson K, Rausch RD, Bonhaus DL. Implicit/Multigrid algorithms for incompressible turbulent flows on unstructured grids. AIAA Paper 95-1740; 1995.[19]Kuhn HW, Tucker AW. Nonlinear programming. In: Proceedings of 2nd Berkeley symposium. Berkeley. University of California Press; 1951. p. 481–492.[20]Karypis G, Kumar V. METIS, a software package for partitioning unstructured graphs, partitioning meshes and computing fill-reducing ordering of sparse matrices. Technical Report, Department of Computer Science, University of Minnesota; 1997.[21]MPIA message passing interface standard – message passing interface forumInt J Supercomput Appl High Perform Comput, 8 (1994)[22]Akay HU, Oktay E. A structural analysis program: SAPeda’. EDA-TR-2004-004; 2004.





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