相关实验视频
Updated: Sep 19, 2025

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Fabrication and Design of Wood-Based High-Performance Composites
Published on: November 9, 2019
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混合整数,多目标层次优化可变刚度复合材料的间隙和重叠
D Zamani1, A Racionero Sánchez-Majano1,2, A Pagani1
1MUL 2 Lab, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy.
概括
本研究介绍了一种混合整数策略,用于优化可变角拉 (VAT) 复合材料,最大限度地降低重量,同时满足性能要求,并考虑自动纤维放置 (AFP) 中的制造缺陷. 该方法确保了结构完整性,并减少了航空航天应用中的重量.
科学领域:
- 复合材料科学 复合材料科学
- 航空航天工程 航空航天工程
- 结构优化 结构优化
背景情况:
- 自动化纤维放置 (AFP) 能够实现可变角度拖 (VAT) 复合材料,以提高机械性能和减轻航空航天领域的重量.
- 制造缺陷,如增值税层板的空隙和重叠,对质量和结构优化构成挑战.
- 优化增值税结构涉及复杂的离散 (层数) 和连续 (光纤路径) 设计变量.
研究的目的:
- 开发一个混合整数策略,以优化由AFP生产的增值税层设计.
- 为了最大限度地降低增值税层材的重量,同时满足自然频率和曲折负荷的约束.
- 将制造缺陷的影响和AFP工艺特征纳入优化.
主要方法:
- 结合了Carrera统一配方 (CUF) 用于层层建模与缺陷层方法 (DLM) 来考虑制造缺陷.
- 使用混合整数策略来处理离散和连续的设计变量.
- 将AFP过程的制造特征集成到优化框架中.
主要成果:
- 确定增值税层材所需的最低层次数,以满足频率和曲约束,考虑到制造缺陷.
- 识别最佳的纤维路径参数,以最大限度地降低层重量.
- 评估不同结构理论对所得到的最佳设计的影响.
结论:
- 拟议的混合整数策略有效地优化了增值税层设计的重量和结构性能.
- 考虑AFP制造缺陷对于准确优化VAT复合材料的结构至关重要.
- 这种方法有助于开发更轻,更高效的航空航天结构.
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