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在翼面早期设计阶段,为了快速有效地评估结构变化对力学和气动弹性特性的影响,亟需一种基于物理特征的结构分析模型。基于对多栅格式弹翼结构典型组件梁、肋腹板和蒙皮建模的相关研究,针对机翼结构,发展了针对梁、肋凸缘以及长桁的建模方法。对模拟边界条件的弹簧的刚度选取进行了详细研究,得到了刚度值的建议选取范围。将等效板模型推广应用到典型机翼结构的静力学、动力学以及静、动气动弹性分析中。通过与有限元计算结果比较发现,两者吻合较好,但等效板方法计算效率更高。等效板模型为翼面早期设计中一种可用的、快速有效的分析模型。
In the early design phase of the airfoil, a structural analysis model based on physical characteristics is urgently needed in order to evaluate the effect of structural changes on the mechanical and aeroelastic characteristics quickly and effectively. Based on the research on the modeling of the typical component beams, rib webs and skins of the multi-grid wing system, aiming at the wing structure, the modeling methods for the beams, rib flanges and long stringers are developed. The stiffness selection of the spring with simulated boundary conditions is studied in detail, and the recommended range of stiffness is obtained. The equivalent plate model is extended to the statics, dynamics and the dynamic and aeroelastic analysis of a typical wing structure. Compared with the results of finite element calculation, the agreement between the two is good, but the equivalent plate method is more efficient. The equivalent plate model is a useful, fast and effective analytical model for the early design of the airfoil.