期刊
CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES
卷 135, 期 2, 页码 809-838出版社
TECH SCIENCE PRESS
DOI: 10.32604/cmes.2023.023561
关键词
Topology optimization; stiffened plate structures; moving morphable component (MMC); straight/curved skeletons
This paper proposes an explicit method for topology optimization of stiffened plate structures by seeking the optimal geometry parameters of a series of moving morphable components. The proposed approach provides a clear description of the structure and enables the generation of a stiffened plate structure with clear stiffener distribution and smooth geometric boundary.
This paper proposes an explicit method for topology optimization of stiffened plate structures. The present work is devoted to simultaneously optimizing stiffeners' shape, size and layout by seeking the optimal geometry parameters of a series of moving morphable components (MMC). The stiffeners with straight skeletons and the stiffeners with curved skeletons are considered to enhance the modeling and optimization capability of the current approach. All the stiffeners are represented under the Lagrangian-description framework in a fully explicit way, and the adaptive ground structure method, as well as dynamically updated plate/shell elements, is used to obtain optimized designs with more accurate analysis results. Compared with existing works, the proposed approach provides an explicit description of the structure. Thus, a stiffened plate structure with clear stiffener distribution and smooth geometric boundary can be obtained. Several numerical examples provided, including straight and curved stiffeners, hierarchical stiffeners, and a stiffened plate with a cutout, validate the effectiveness and applicability of the proposed approach.
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