摘要
未来客机有可能采用桁架支撑机翼布局型式。针对桁架支撑机翼质量计算问题,采用基于结构有限元模型的优化方法对机翼结构尺寸进行设计,根据优化结果和经验方法估算整个桁架支撑机翼结构质量。优化设计结果表明,最大应变和发生屈曲处均位于桁架与主机翼连接处,主机翼的结构尺寸主要由应变约束决定,桁架的结构尺寸主要由屈曲约束决定。质量计算结果表明,桁架支撑机翼质量占全机质量的13.2%,与常规布局飞机机翼质量占全机质量的百分比相当。
The truss-braced wing（ TBW） configuration is one of potential configurations for future commercial aircraft. One of issues for such configuration design is the mass estimation of truss-braced wing. In this paper,it presents an optimization method based on the structural finite element model to determine the structural size of the truss-braced wing,and calculates the mass of truss-braced wing based on optimization results and the empirical method. The optimization results show that both the maximum strain and maximum buckling are located at the intersection between the main wing and strut. The structural size of the main wing is mainly determined by strain constraint,and the size of the strut is mainly determined by buckling constraints. The results from mass computation indicate that the weight of the truss-braced wing accounts for 13. 2% of the takeoff gross mass of aircraft,which is similar to that for conventional commercial aircraft.
出处
《机械设计与制造工程》
2018年第2期83-86,共4页
Machine Design and Manufacturing Engineering
关键词
客机
桁架支撑机翼
有限元分析
结构优化
质量
commercial aircraft
truss - braced wing
finite element analysis
structure optimization
mass
