Evaluation of the mechanical properties and deformability of metal-based composite sheets made of thin stainless-steel sheets and carbon fiber reinforced plastics
Evaluation of the mechanical properties and deformability of metal-based composite sheets made of thin stainless-steel sheets and carbon fiber reinforced plastics
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不锈钢薄板和碳纤维增强塑料金属基复合材料板的力学性能和变形能力评价
DOI：
10.1007/s12289-022-01661-z
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发表时间：
2022
影响因子：
2.4
通讯作者：
Yanagimoto Jun
中科院分区：
文献类型：
--
作者：
Shibuya Yuki;Zhang Jingwei;Sato Yuji;Yanagimoto Jun
新型飞行器以及更环保的传统车辆的开发需要具有优异变形能力的超轻板材。碳纤维增强塑料（CFRP）具有较高的比刚度和强度，但价格昂贵，不适用于一般机械零件。使用 CFRP 可以增强材料本身的性能。此外，材料用途的拓展也使得机械性能更高。本文的目的是将这两种方法结合起来，生产出一种具有更好刚性和变形能力的材料。考虑到面积惯性矩，提出了新结构。该结构不仅在刚性方面优异，而且在型芯的成型性方面也优异。此外，通过有限元（FE）分析和实验确定了结构尺寸对成型性、粘合强度和弯曲刚度的影响。通过将纯弯曲条件下的有限元分析结果与三点弯曲实验结果进行比较，发现纯弯曲有限元分析无法预测三点弯曲刚度，因为剪应力对实验测量有显着影响。通过将模型从纯弯曲修改为三点弯曲，3D FE 分析很好地再现了实验结果。
Ultra-lightweight sheets with excellent deformability are required for the development of new air vehicles, as well as greener conventional vehicles. Carbon fiber reinforced plastic (CFRP) has a high specific rigidity and strength but is too expensive to be used in general machine parts. Using CFRP enhances the properties of the material itself. Furthermore, developing the usage of the material also makes the mechanical properties higher. The purpose of this paper is to combine both methods and produce a material with better rigidity and deformability. The new structure was proposed considering the moment of inertia of area. This structure was excellent not only in terms of rigidity but also in the moldability of the core. In addition, the effects of the structure dimensions on the moldability, bonding strength and flexural rigidity were determined using finite element (FE) analysis and experiments. By comparing the results of the FE analysis conducted under pure bending conditions with three-point bending experiment, it was found that the FE analysis of pure bending fails to predict the three-point bending stiffness because the shear stress has a significant effect on the experimental measurements. By modifying the model from pure bending to three-point bending, the experimental results were well reproduced by the 3D FE analysis.
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