铺层角度对复合材料翼板水动力特性影响分析

Composite materials, such as CFRP, are used as smart materials in underwater structures for its bend-twist coupling properties. In this paper, the CFD/FEM coupling fluid-structure method was used to investigate relationship between the ply orientation and the bend-twist coupling and the drag reduction properties. The results show that influence of ply orientation on the composite wing mechanical properties was negligible with small attack angle and significant with large attack angle. Appropriate ply orientation could effectively reduce drag force. The stress concentration area was consistent with ply orientation direction.