三维编织复合材料圆柱壳的稳定性研究

Stability of 3D braided composite cylindrical shells

采用MSC/NASTRAN大型有限元分析软件对含有损伤的三维编织复合材料壳体进行了分析 ,重点对影响三维编织复合材料圆柱壳体结构稳定性的因素如编织角、损伤程度等进行了研究 ,给出了相应的数值计算结果 .结果表明 ,编织角、局部损伤。

3-D braided structures of composite material are widely used in the fields of aviation, spaceflight and defense for their excellent performance. A MSC/NASTRAN (large-scale finite analysis software) is therefore introduced for the analysis of a 3-D braided cylindrical shell structure with damage, and the factors having effect on the stability of these shell structures, such as braid angle and damage degree in particular, are given with numerical results. It is concluded that braid angle, local damage and global damage all have a significant effect on the stability of composite material shells.