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通过贝叶斯优化和遗传算法为建筑复合材料设计形状构成元素的设计:一个概念评估
David O Kazmer1, Rebecca H Olanrewaju1, David C Elbert2
1Department of Plastics Engineering, University of Massachusetts Lowell, Lowell, MA 01854, USA.
Materials (Basel, Switzerland)
|November 9, 2024
概括
形状成型元件 (SFEs) 允许建筑复合材料挤出,但材料分布的准确性随着加工而降低. 需要先进的建模来精确控制诸如储能等应用.
科学领域:
- 材料科学 材料科学 材料科学
- 增材制造 增材制造 增材制造
- 计算设计的计算设计.
背景情况:
- 建筑复合材料为先进的应用提供了量身定制的性能.
- 挤出工艺对于制造复杂的材料分布至关重要.
- 造型元件 (SFEs) 是用于多材料挤出的新型组件.
研究的目的:
- 通过挤压引入和评估SFEs用于制造建筑复合材料的使用.
- 探索使用SFE参数选择优化算法的设计自动化.
- 与数字模型和模拟相比,评估 SFEs 实现的材料分布的准确性.
主要方法:
- 开发具有多种材料路由流通道的SFE.
- 贝叶斯优化和遗传算法的应用用于设计自动化.
- 目标函数的最小化:截面匹配 (像素误差+SSIM) 和信息内容最大化 (SSIM).
- 通过模拟粘土的挤出验证和使用结构相似性指数 (SSIM) 的比较.
主要成果:
- 在SFE中,矩形流通道的客观函数值比方形更好.
- 最初的设计到模拟SSIM值为~0.8,表明良好协议.
- 随着连续的SFE处理,材料分配的准确性显著下降 (SSIM下降到0.023).
- 流量模拟显示中度一致 (SSIM ~0.4),但也未能准确预测预期的横截面.
结论:
- 在挤出过程中,SFEs可以施加复杂的材料转换,但在精确的材料分布控制方面却存在困难.
- 目前的建模和模拟技术缺乏对基于SFE的复杂挤出进行预测的准确性.
- 需要进一步开发先进的建模,以实现SFE在生物医学,储能和结构应用中的潜力.
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