反推力装置结构优化设计

Structural optimization design of thrust reverser

根据叶栅式反推力装置结构及其工作原理,建立了反推力装置运动学与动力学数学模型,以此为基础,取反推力装置对作动系统的最大负载力极小化为目标函数,装置各运动机构满足几何关系为约束条件,建立反推力装置结构优化模型。通过反推力装置运动学及动力学仿真,并分析在不同结构参数下反推力装置运动学及动力学特性,验证了所建立模型的合理性与正确性。在Matlab环境下采用惩罚函数法对反推力装置进行结构优化设计,结果表明:优化后的反推力装置正向最大负载力下降了24.5%,负向最大负载力下降了16.3%,且各个机构运动不出现干涉,整个反推力装置可正常工作。论文建模方法与优化结果可为反推力装置结构设计提供参考。

According to the structure and working principle of the cascade thrust reverser,the kinematic and dynamic mathematical model of the thrust reverser was established.On this basis,the maximum load force of the thrust reverser on the actuating system was minimized as the objective function,and the geometric relationship of the moving parts was taken as the constraint condition,the structure optimization model of the thrust reverser was established.Through the kinematics and dynamics simulation of the thrust reverser,and the kinematics characteristics of the thrust reverser under different structural parameters,it was verified that the established model was reasonable and correct.Under the Matlab environment,the structure optimization of the thrust reverser was carried out by the penalty function method.Results showed that the optimized maximum load force of the thrust reverser in the positive direction decreased by 24.5%,and in the negative direction decreased by 16.3%,and the moving parts did not interfere,the whole thrust reverser can work normally.The modeling method and optimization results can provide reference for thrust reverser structural design.