复合材料登机舱门结构的设计研究

摘要

登机舱门作为飞机的重要运动部件，目前主要采用金属材料，具有很大的减重潜力。为了研究复合材料用于登机舱门结构设计的可行性及其关键问题，按照适航规章及复合材料结构设计要求，在国内首次开展复合材料登机舱门结构的设计与分析：首先采用有限元模型对三种舱门结构方案在设计载荷下的应变情况进行分析，优选设计构型方案；在此基础上，采用整体-局部单钉模型方法对优选的构型方案进行强度分析。结果表明：复合材料用于登机舱门结构设计是可行的。研究结果可为复合材料登机舱门结构的工程化设计提供一定参考。%The boarding door is an important moving part of aircraft and often made of metal ,so it is of great potential for weight saving .The purpose of this article is to analyze the feasibility of using composite material in the structure design of boarding door .According to the CCAR and design criteria for composite structure ,a re-search on structure design and analysis of composite boarding door is carried out .The best one of three design options is chosen based on stress and strain analysis using FEM .Then the structural strength is analyzed by u-sing the method of global-local single-bolt mode .The research reveals that using the composite materials in structure design of boarding door is feasible .The research results can provide a reference for the engineering de-sign of composite board door structure .