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P. Fang, T. Gao, Y. Huang, P. Duysinx, W. Zhang, L. Song, "Uniform Multiple Laminates Interpolation Method for Angle Optimization of Double-Double Composite Laminates Based on Multi-Material Topology Optimization Strategy", in P. Iványi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Computational Structures Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 9, Paper 3.4, 2024, doi:10.4203/ccc.9.3.4

Keywords: composite structures, Double-Double laminates, multi-material topology optimization, discrete material, uniform multiple laminates interpolation, ply orientation angle design.

Abstract

Double-Double laminates present an innovative laminate layup, incorporating a repetition of sub-plies featuring two groups of balanced angles. This layup provides composite materials a broad design flexibility together with the ease of design and manufacturing. This paper proposes an optimization design method for Double-Double laminates based on multi-material topology optimization, which can be applied to the angle optimization design of composite structures with Double-Double layups. A uniform multiple laminates interpolation model is proposed to describe the certainty of the layer direction of composite laminates. The uniform multiple laminates interpolation has the additional advantage when dealing with multi-area and multi-layer composite structures, as it significantly reduces the number of calculations required and eliminates the need for adding interlayer constraints during optimization. The stiffness matrix of each combination of angles for Double-Double laminates is interpolated to form virtual laminates. The sensitivity of the optimization problem with the objective of minimizing the compliance is derived. Finally, the method was applied to the design of composite stiffened panels and composite Unmanned Aerial Vehicle wing. The optimal results show that the optimized Double-Double laminates can get better performance than the Quad laminates with the same percentage of angle.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 9 PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: P. Iványi, J. Kruis and B.H.V. Topping Paper 3.4 Uniform Multiple Laminates Interpolation Method for Angle Optimization of Double-Double Composite Laminates Based on Multi-Material Topology Optimization Strategy P. Fang¹, T. Gao¹, Y. Huang¹, P. Duysinx², W. Zhang¹ and L. Song¹ ¹School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an, China ²Department of Aerospace and Mechanical Engineering, University of Liège, Liège, Belgium doi:10.4203/ccc.9.3.4 Full Bibliographic Reference for this paper P. Fang, T. Gao, Y. Huang, P. Duysinx, W. Zhang, L. Song, "Uniform Multiple Laminates Interpolation Method for Angle Optimization of Double-Double Composite Laminates Based on Multi-Material Topology Optimization Strategy", in P. Iványi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Computational Structures Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 9, Paper 3.4, 2024, doi:10.4203/ccc.9.3.4 Keywords: composite structures, Double-Double laminates, multi-material topology optimization, discrete material, uniform multiple laminates interpolation, ply orientation angle design. Abstract Double-Double laminates present an innovative laminate layup, incorporating a repetition of sub-plies featuring two groups of balanced angles. This layup provides composite materials a broad design flexibility together with the ease of design and manufacturing. This paper proposes an optimization design method for Double-Double laminates based on multi-material topology optimization, which can be applied to the angle optimization design of composite structures with Double-Double layups. A uniform multiple laminates interpolation model is proposed to describe the certainty of the layer direction of composite laminates. The uniform multiple laminates interpolation has the additional advantage when dealing with multi-area and multi-layer composite structures, as it significantly reduces the number of calculations required and eliminates the need for adding interlayer constraints during optimization. The stiffness matrix of each combination of angles for Double-Double laminates is interpolated to form virtual laminates. The sensitivity of the optimization problem with the objective of minimizing the compliance is derived. Finally, the method was applied to the design of composite stiffened panels and composite Unmanned Aerial Vehicle wing. The optimal results show that the optimized Double-Double laminates can get better performance than the Quad laminates with the same percentage of angle. download the full-text of this paper (PDF, 14 pages, 1028 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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