Application‐Specific CFCMC Design Using 2D Structural Simulations
Application‐Specific CFCMC Design Using 2D Structural Simulations
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DOI：
10.1002/9780470294567.ch10
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发表时间：
2008-03
期刊：
影响因子：
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通讯作者：
T. Jessen;A. Kee;R. Everett;B. Bender;K. E. Simmonds;A. Geltmacher
中科院分区：
文献类型：
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作者：
T. Jessen;A. Kee;R. Everett;B. Bender;K. E. Simmonds;A. Geltmacher
可控结构技术（CST）已被确立为一种制造复合材料细观结构的工艺方法。CST与有限元法（FEM）结合使用，可实现特定应用的复合材料细观结构的桌面设计。准确的性能预测取决于对实际纤维分布的实际估计。使用X射线计算机断层扫描（XCMT）和连续切片来跟踪CST复合材料内的纤维分布。重建的3D XCMT图像显示，通过1.5 mm3切片，基质和纤维丰富区域连续且均匀。间隔为1 mm的2D切片显示单个纤维位置存在差异，但两个尺寸组的总体一致性。连续截面的有限元损伤演化图显示了截面之间裂纹扩展的等效水平。这些结果表明，二维有限元建模可用于模拟三维裂纹扩展CST设计考虑。
Controlled Structure Technology (CST) has been established as a processing methodology to engineer composite mesostructures. The use of CST with finite element methods (FEM) allows for desk‐top design of application‐specific composite mesostructures. Accurate performance prediction is dependent on realistic estimates of the actual fiber distribution. X‐ray Computed Microtomography (XCMT) and serial sections were used to track the fiber distribution within a CST composite. Reconstructed, 3D XCMT images show that the matrix and fiber‐rich regions were continuous and uniform through 1.5 mm3slices. The 2D sections at 1 mm intervals showed variation in individual fiber location but general consistency in tow‐sized groupings. FE‐derived damage evolution plots from the serial sections indicate equivalent levels of crack propagation between sections. These results suggest that 2D, FE modeling can be used to simulate 3D crack propagation for CST design considerations.