自闭柜处理厚型复合层材的固化配置的灵敏度分析和多目标优化策略
Yiben Zhang1, Guangshuo Feng1, Bo Liu1
1School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Polymers
|June 10, 2023
概括
使用有限元分析和多目标优化优化用于厚复合材料部件的自固形状,可显著降低最大温度和循环时间. 这种方法提高了制造效率,并最大限度地减少了复合材料组件的缺陷.
科学领域:
- 材料科学与工程 材料科学与工程
- 复合材料加工 复合材料加工
- 制造过程优化 制造过程优化
背景情况:
- 厚型复合材料组件的自闭柜加工面临着制造缺陷和固化效率的挑战.
- 准确预测和控制温度概况和固化程度对于组件质量至关重要.
- 现有的方法可能无法充分解决厚型复合材料固化的复杂性.
研究的目的:
- 为了减轻制造缺陷,并提高固化效率在车加工的厚复合材料组件.
- 通过先进的建模技术进行参数灵敏度分析并优化固化概况.
- 建立一个验证的有限元模型来预测热行为和治疗动力学.
主要方法:
- 开发和验证结合热传递和固化动力学模块的有限元 (FE) 模型.
- 应用Sobol灵敏度分析来确定关键的固化过程参数.
- 实施一个多目标优化策略,结合最佳拉丁超立方采样,辐射基函数 (RBF) 和非主导排序遗传算法-II (NSGA-II).
主要成果:
- 该FE模型准确地预测了温度和固化程度 (DoC) 配置文件.
- 层材厚度显著影响最大温度 (T) 和温度梯度 (ΔT),而DoC的影响较小.
- 模具材料影响温度场的均性,而具有最高的 ΔT.
结论:
- 优化的固化配置文件将最大温度降低了2.2%,周期时间降低了16.1%,保持了0.91.9的最大DoC.
- 停留温度和停留时间被确定为影响T,ΔT和DoC的关键参数.
- 这项研究为设计厚型复合材料件的实用固化配置文件提供了宝贵的指导.
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