论文标题
融合丝制成的复合材料的多尺度降低订购建模
Multiscale reduced-order modeling of fused filament fabricated composites
论文作者
论文摘要
在添加性制造的复合材料的多个长度尺度上观察到诸如空隙之类的缺陷。建模这种缺陷及其多尺度相互作用对于材料性能预测至关重要。在这项工作中，我们研究了融合的丝状纤维纤维/短碳纤维（PC/SCF）复合样品中的造成的缺陷。已经使用机械减少阶模型研究了微观和中尺度空隙以及中尺度层方向。我们的结果表明，与没有空隙的微观微观结构相比，显微镜的内核空隙与中尺度间的膜间空隙相互作用，并显着降低了印刷复合材料的机械响应。中尺度层方向还会影响应力 - 应变响应，并在将载荷施加到珠方向上时显示出更好的性能。这项工作中使用的有效降低建模方法为评估添加性制造的复合材料的多尺度设计方面提供了一种方法。
Defects such as voids are observed at multiple length scales of an additively manufactured composite material. Modeling such defects and their multiscale interaction is crucial for the materials performance prediction. In this work, we study as-built defects in fused filament fabricated Polycarbonate/Short Carbon Fiber (PC/SCF) composite samples. The microscale and mesoscale voids along with the mesoscale layer orientations have been studied using a mechanistic reduced-order model. Our result indicates that the microscale intrabead voids interact with the mesoscale interbead voids and significantly degrade the mechanical response of the printed composites compared to the microscale microstructure without voids. The mesoscale layer orientations also influence the stress-strain response and show better performance when the load is applied to the bead direction. The efficient reduced-order modeling approach used in this work provides a way to evaluate multiscale design aspects of additively manufactured composite materials.
