复合材料在民用客机上的应用量越来越高,目前已经出现了全复合材料机身的大型客机,对于全复合材料机身舱门区补强问题也显得尤为重要。该文就大型某型客机复合材料机身舱门区结构补强进行分析研究,设计了一套适用于大型客机复合材料机身的补强结构并进行了有限元计算分析和结构优化,计算结果符合设计的相关要求。 The applications of composite materials in civil passenger aircraft are getting higher and higher. At present, large passenger aircraft with all-composite fuselage have appeared, and it is even more important for the reinforcement of all-composite fuselage hatch area. In this paper, the structural reinforcement of the fuselage door of a large passenger aircraft composite aircraft is analyzed and studied. A set of reinforcing structure suitable for fuselage of large passenger aircraft is designed and the finite element analysis and structural optimization are carried out. The calculation results Meet the design requirements.