三维四向编织复合材料剪切性能的数值预报

详细信息

NUMERICAL PREDICTION OF THE LONGITUDINAL AND TRANSVERSAL MODULI OF THREE DIMENSIONAL AND 4-STEP BRAIDED COMPOSITES

1.
Institute of Composites Mechanics, Beijing University of Aeronautics &|Astronautics, Beijing 100083;
2.
Aerospace Research Institute of Material and Processing Technology, Beijing 100076

摘要

摘要: 应用三维四向编织复合材料的参数化建模技术, 在“米”字型枝状体胞计算模型基础上, 讨论了该材料在剪切变形中体胞的边界条件, 较为真实地模拟了该材料的细观结构, 进一步对该材料的剪切模量进行了数值预报;最后通过结果的分析, 总结了剪切模量随不同编织角及纤维体积含量的变化关系。
- 复合材料 /
- 三维编织 /
- 剪切模量 /
- 数值预报
Abstract: Shear properties of the composite is studied by using the parameterized modeling technology for three dimensionally and 4 step braided composites and based on the “米” type model of a representative unit cell presented for FEM numerical prediction. First, the boundary conditions of the unit cell are discussed under shear deformation. Then, the shear moduli of the composite are predicted by FEM calculation. Finally, the relations of the shear moduli varying with different braiding angles and fiber volume fractions are concluded by analysis for the results.
- fiber reinforced composites /
- shear modulus /
- numerical simulation /
- three dimensional braiding