[논문]Stress-related topology optimization of shell structures using IGA/TSA-based Moving Morphable Void (MMV) approach

Zhang, Weisheng; Jiang, Shan; Liu, Chang; Li, Dingding; Kang, Pilseong; Youn, Sung-Kie; Guo, Xu

doi:10.1016/j.cma.2020.113036

[해외논문] Stress-related topology optimization of shell structures using IGA/TSA-based Moving Morphable Void (MMV) approach

Computer methods in applied mechanics and engineering, v.366, 2020년, pp.113036 -

Zhang, Weisheng (State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, International Research Center for Computational Mechanics, Dalian University of Technology) , Jiang, Shan (State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, International Research Center for Computational Mechanics, Dalian University of Technology) , Liu, Chang (State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, International Research Center for Computational Mechanics, Dalian University of Technology) , Li, Dingding (State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, International Research Center for Computational Mechanics, Dalian University of Technology) , Kang, Pilseong (Center for Space Optics, Korea Research Institute of Standards and Science Repu) , Youn, Sung-Kie , Guo, Xu

Abstract ▼ AI-Helper

Abstract There have been quite a few research works on the topology optimization under stress constraints. However, most of them only treated two dimensional (2D) cases. In the present work, a new approach for topology optimization of three dimensional (3D) shell structures under stress constraints is presented. This approach is constructed by combining the Moving Morphable Void (MMV) approach with trimming technique-based Isogeometric analysis (IGA), where the shell geometry is described using Non-Uniform Rational B-Spline (NURBS) and a set of trimming curves. The proposed approach not only shares the same advantages of MMV approach for topology optimization (e.g., involving small number of design variables, linking with CAD system seamlessly, etc.), but also has the capability of providing high accuracy stress analysis results using much smaller number of degree of freedoms with the help of trimming surface analysis (TSA) technique. Several numerical examples are also presented to demonstrate the effectiveness and advantages of the proposed approach. Highlights An approach is presented for stress topology optimization of shell structures. The adopted explicit framework can link the optimized results with CAD systems. The proposed trimming technique provides high accuracy stress analysis results.

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DOI : 10.1016/j.cma.2020.113036
Elsevier : 저널 > 논문

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