本文利用NX Nastran的强大功能,针对某飞机主起车架在飞机刹车转弯这一过程进行FEA结构线性静力分析,并用实验结果来验证。探讨和总结出一套专门针对飞机起落架专业的有限元分析流程与方法。本文把该飞机主起车架结构在未破坏之前简化为弹性的梁,利用FEM对该主车架进行3D梁单元模型网格划分(Mesh)、几何模型理想化、自由度(DOF)约束、加载、求解、结果后处理等相关操作,计算出一些用于指导飞机起车架结构设计的结果。 In this paper, the powerful function of NX Nastran is used to conduct linear static analysis of FEA structure in the process of turning the main frame of a certain aircraft on the brake of aircraft. The experimental results are used to verify the results. Explore and summarize a set of specialized finite element analysis of the aircraft landing gear flow and methods. In this paper, the main frame structure of the aircraft is simplified to a flexible beam before it is destroyed. Mesh, geometric model idealization and DOF constraints of the main frame are simulated by FEM. Loading, solving, post-processing and other related operations to calculate some of the results for the guidance of aircraft frame structure design.