某型飞机翼盒结构多约束优化设计

Multi-constrained Optimization Design of W ing Box for Some Aircraft

将翼盒尺寸设计中多学科设计要求,包括应力、稳定性、气动弹性、变形和制造等要求转化为优化设计过程中和结构尺寸相关联的约束条件,从而将翼盒尺寸多学科优化设计(MDO)问题转化为多约束优化设计(MCO)问题。基于Hyperworks优化设计平台,建立了某型飞机翼盒有限元模型并利用TCL\TK语言将多学科约束嵌入到翼盒尺寸优化设计过程中,定义了多约束优化设计模型。优化设计结果减重7.4%,有效指导了翼盒结构详细设计。

The multidisciplinary design optimization （MDO） of wing box is transformed into the issue of multi- constrained optimization （MCO） of wing box with all relevant sizing requirements for structural stress, stability, aero-elastic behavior. Deflection and manufacture are treated as the constraints of the sizing optimization. All con- straints are linked with the design variables and written into the process of optimization by TCL/Tk toolkit based on Hyperworks platform. A MCO model of wing box is developed after a FEM model. The MCO method has been sue- eessfully applied to a trunk liner wing box sizing and a 7.4% weight-saving result has been obtained with much shorter iteration, which confirmed its validity.