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| Multi-scale topology optimization for continuous fiber-reinforced composite structures |
| Received:July 22, 2024 Revised:August 18, 2024 |
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| DOI：10.7511/jslx20240722004 |
| KeyWord:continuous fiber-reinforced composites topology optimization multi-scale optimization principal stress orientation |
| Author | Institution |
| 叶红玲 |
北京工业大学 数学统计学与力学学院, 北京 |
| 董永佳 |
北京工业大学 数学统计学与力学学院, 北京 |
| 肖扬 |
北京工业大学 数学统计学与力学学院, 北京 |
| 王伟伟 |
北京工业大学 数学统计学与力学学院, 北京 |
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| Abstract: |
| Continuous fiber-reinforced composites are increasingly favored in high-end equipment manufacturing fields such as aerospace engineering due to their lightweight,high specific strength,and high specific modulus.Meanwhile,the development of continuous fiber 3D printing technology makes it possible to fabricate structures with complex geometric configurations and fiber distribution.To sufficiently utilize the multi-scale designability of composites and obtain better structural properties,a multi-scale topology optimization method for continuous fiber-reinforced composite structures based on independent continuous topology variables is proposed in this paper.This method introduces a fiber orientation interpolation strategy based on principal stresses to determine local optima in the fiber angle optimization process,and realizes the concurrent optimization design of macro-topology,micro-fiber orientation and density of continuous fiber composite structures.Topology and fiber orientation design variables are updated through the method of moving asymptotes (MMA).Numerical examples are provided to verify the effectiveness and stability of the proposed method,which has guiding significance for the structural design and path planning of continuous fiber-reinforced composite structures. |
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