论文部分内容阅读
利用复合材料替代金属结构在新型飞机上已经取得了很大的进步,如空客A350和波音787的复合材料使用量已经超过了50%。大型航空航天构件现在常常使用轻质复合材料进行设计,这是由于复合材料具有减重、设计自由度高和使用寿命长等优点。相对于低成本的金属三维复杂形状的构件,例如结构支架、接头、夹子或其他部件,如果采用注塑成型则性能太低;如果采用传统连续纤维复合材料,由于是复杂的几何形状则很难实现(或不可能)。
Significant improvements have been made in the new aircraft using composite materials to replace metal structures. Composites such as the Airbus A350 and Boeing 787 have been used in excess of 50%. Large aerospace components are now often engineered using lightweight composites due to their weight reduction, high design freedom and long service life. Compared with low-cost metal three-dimensional complex shape of the components, such as structural support, joints, clips or other components, if the injection molding performance is too low; with traditional continuous fiber composite materials, due to the complexity of the geometry is difficult to achieve (Or impossible).