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<p>This study proposes a topology optimization method for bead-stiffened shell structures based on Moving Morphing Bead (MMB) approach. The approach conceptualizes bead-stiffened structures as assemblies, which is composed of multiple moving morphing bead components and fixed base panel. Driven by manufacturing requirements, precise parametric modeling of bead components is achieved through Lagrangian geometry description. Under the explicit topology optimization framework, geometry parameters are optimized by moving, deforming, and overlapping of the bead components, thereby optimizing the topology configuration. The developed approach generates bead-stiffened structures with explicit geometric description, which enables effective control of manufacturing parameters including bead angle, width, and depth. Furthermore, benefiting from the parametric description, optimized results can be directly imported into CAD/CAE systems for subsequent processing. Several numerical examples demonstrate the validity and engineering practicality of the proposed method.</p>

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Optimization of bead-stiffened shell structures with manufacturability constraints via Moving Morphable Bead (MMB) approach

  • 期刊论文

  • 发表日期：

    2025年8月14日

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  • Weisheng Zhang,
  • Shaopeng Yan,
  • Bo Wang,
  • Sung‑Kie Youn,
  • Xu Guo

摘要

This study proposes a topology optimization method for bead-stiffened shell structures based on Moving Morphing Bead (MMB) approach. The approach conceptualizes bead-stiffened structures as assemblies, which is composed of multiple moving morphing bead components and fixed base panel. Driven by manufacturing requirements, precise parametric modeling of bead components is achieved through Lagrangian geometry description. Under the explicit topology optimization framework, geometry parameters are optimized by moving, deforming, and overlapping of the bead components, thereby optimizing the topology configuration. The developed approach generates bead-stiffened structures with explicit geometric description, which enables effective control of manufacturing parameters including bead angle, width, and depth. Furthermore, benefiting from the parametric description, optimized results can be directly imported into CAD/CAE systems for subsequent processing. Several numerical examples demonstrate the validity and engineering practicality of the proposed method.