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拖式复合材料的基本频率层级优化,考虑到差距和重叠
A Pagani1, A Racionero Sánchez-Majano1, D Zamani1
1MUL2 Lab, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy.
概括
自动化纤维放置 (AFP) 允许可变角度拉动 (VAT) 复合材料以提高性能. 这项研究将制造缺陷 (如空白和重叠) 整合到设计优化中,揭示了它们对结构行为和基本频率的影响.
科学领域:
- 复合材料工程 复合材料工程
- 航空航天制造业 航空航天制造业
- 结构优化 结构优化
背景情况:
- 自动化纤维放置 (AFP) 允许使用可变拉角 (VAT) 或可变刚度复合材料 (VSC),比传统复合材料提供更好的机械性能.
- 制造业在增值税/VSC方面的限制限制限制了它们的全部潜力,特别是对于工艺引起的缺陷,如空白和重叠.
研究的目的:
- 研究初级制造缺陷 (缺口和重叠) 对可变刚度复合材料 (VSC) 的最佳设计和基本频率的影响.
- 评估不同结构理论对VSC的最佳设计解决方案的影响,考虑到制造缺陷.
主要方法:
- 将Carrera统一配方 (CUF) 和缺陷层方法 (DLM) 集成到优化框架中.
- 模拟制造和拖过程,以量化和映射每个层层层中的缺陷.
- 在缺陷条件下分析结构行为和基本频率优化.
主要成果:
- 量化差距和重叠对VSC最佳设计的影响.
- 展示制造缺陷如何影响复合结构的基本频率.
- 使用不同的结构理论获得的最佳解决方案的比较.
结论:
- 工艺引起的缺陷显著影响可变刚度复合材料的最佳设计和性能.
- 选择的结构理论可以影响在模拟具有制造缺陷的VSC时的最佳解决方案.
- 集成的CUF和DLM框架为分析受缺陷影响的VSC提供了一种有效的方法.
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