基于拓扑与尺寸优化的某型飞机起落架扭力臂轻量化设计

Lightweight Design of a Certain Aircraft Landing Gear Torsion Arm Based on Topology and Size Optimization

为提高某型飞机的性能,实现起落架轻量化的设计目的,对起落架扭力臂强度进行分析和结构优化,利用SolidWorks软件完成扭力臂组件的三维建模,基于ANSYS Workbench对扭力臂进行应力应变分析,采用拓扑优化方法获得新的材料分布,通过Matlab对重构模型的7个显著参数进行响应面建模,并用遗传算法获得其最优的结构尺寸。结果表明,该方法切实可行,为扭力臂轻量化设计提供了新的思路。

In order to improve the performance of a certain type of aircraft and realize the purpose of landing gear lightweight design,the strength analysis and structure optimization of the landing gear torsion arm were carried out.SolidWorks software was used to complete the three-dimensional modeling of the torsion arm component.Based on ANSYS Workbench,the stress-strain analysis of the torsion arm was carried out.The new material distribution was obtained by using the topology optimization method.The response surface modeling of seven significant parameters of the reconstructed model was carried out by using Matlab,and the optimal structure size was obtained by using genetic algorithm.