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针对民用飞机中广泛采用的双梁式机翼结构,以机翼结构纵向构件(长桁)和横向构件(翼肋)的数量为参数生成机翼CAD模型,然后基于Patran的PCL(Patran Com-mand Language)语言,根据整体模型分割、局部模型编号、局部网格控制、整体有限元生成的思路,实现了以纵向和横向构件的数量变化为基础自动进行机翼结构有限元模型的构建及分析,并将上述流程集成到机翼结构的布局优化中.最后参照某大型民用飞机的机翼外形尺寸建立了CAD模型,以机翼的静强度、刚度和蒙皮稳定性为约束,以机翼结构质量最低为目标,对上、下蒙皮长桁和翼肋数量进行了优化.优化后的布局使机翼结构质量降低了10.1%,表明了布局优化方法的有效性和可行性.
Aiming at the double-beam wing structure widely used in commercial aircraft, a wing CAD model is generated based on the number of longitudinal members (stringers) and transverse members (ribs) of the wing structure, and then based on Patran’s PCL (Patran Com- mand Language is used to construct and analyze the finite element model of the wing structure automatically based on the change of the number of vertical and horizontal components based on the whole model partition, local model number, local grid control and overall finite element generation. , And the above process is integrated into the layout optimization of the wing structure.Finally, a CAD model is established with reference to the wing shape dimensions of a large commercial aircraft, constrained by the wing’s static strength, stiffness and skin stability, The minimum structural mass as the goal, the upper and lower skin stringer and the number of ribs is optimized.The optimized layout reduces the wing structure quality by 10.1%, which shows that the layout optimization method is effective and feasible.