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Lohia Mechatronik
卡布拉塑料挤出机械
Used Compounding Line for Masterbatches
Lohia-tape-plant
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Mamta
reliance-polymers
技术论文塑料
设计较轻的碳纤维增强塑料的新方法

设计较轻的碳纤维增强塑料的新方法

一种用于制造具有优化方向和厚度的碳纤维的新设计方法可减轻纤维增强塑料的体重。碳纤维由于其出色的强度和轻巧,在航空工程应用中很受欢迎。碳纤维比钢更坚固,更硬且较轻。碳纤维通常与塑料结合在一起,形成碳纤维增强塑料(CFRP),该碳纤维纤维增强塑料(CFRP),其抗拉力强度,刚度和高强度比率为众所周知。由于其需求量很高,研究人员已经进行了几项研究以提高CFRP的强度,其中大多数都集中在一种称为“纤维讲设计”的特定技术上,该技术优化了纤维方向以增强强度。
Now, researchers from Tokyo University of Science have adopted a new design method that optimizes both fiber thickness and orientation, achieving weight reduction in reinforced plastic and opening doors to lighter aircrafts and automobiles. "Fiber-steered design only optimizes orientation and keeps the thickness of the fibers fixed, preventing full utilization of the mechanical properties of CFRP. A weight reduction approach, which allows optimization of fiber thickness as well, has been rarely considered," explains Dr. Ryosuke Matsuzaki from Tokyo University of Science (TUS), Japan, whose research is focused on composite materials.
Against this backdrop, Dr. Matsuzaki-along with his colleagues at TUS, Yuto Mori and Naoya Kumekawa-proposed a new design method for optimizing the fiber orientation and thickness simultaneously depending on the location in the composite structure, which allowed them to reduce the weight of the CFRP compared to that of a constant thickness linear lamination model without compromising its strength. Their findings can be read in a new study published in Composite Structures.
他们的方法包括三个步骤:预备,迭代和修改过程。在预备过程中,使用有限元方法(FEM)进行初始分析以确定层数,从而通过线性层压模型和具有厚度变化模型的光纤稳态设计实现定性重量评估。迭代过程用于通过主应力方向确定纤维方向,并使用“最大应力理论”迭代计算厚度。最后,修改过程用于通过在需要提高强度提高的区域中创建一个参考“基本纤维束”来修改可产生的可制造性,然后通过排列纤维捆绑包来确定最终方向和厚度参考捆绑包。
同时优化的方法导致重量减轻大于5%,同时比单独使用纤维方向实现的负载转移效率更高。
The researchers are excited by these results and look forward to the future implementation of their method for further weight reduction of conventional CFRP parts.
资料来源:东京科学大学
Title of original paper: Variable thickness design for composite materials using curvilinear fiber paths
杂志:复合结构
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