民用飞机机翼根部连接与柔性补偿设计

民用飞机机翼根部连接区是机翼和机身载荷交换平衡的关键部位,结构强度和耐久性、结构传载效率、装配协调要求、细节处理等设计要求很高。给出了民用飞机机翼根部连接设计的难点分析、传载特性分析、根肋布置方法及其特点分析、不同根部对接方案设计对比分析;提出了一种减缓结构装配应力的柔性补偿设计方法,并通过试验结果验证了相关柔性补偿设计方法的可行性;讨论了考虑复合材料承载特性的复材机翼结构根部对接考虑要点和设计建议。

Structure Design and Compliance Compensation for the Root Joint Civil Aircraft

The wing root joint area for civil aircraft is the critical area where the accumulated load from wing and fuselage is balanced and exchanged. There are extremely high design requirements and constrains for its design considering the structure safety, durability, efficiency and assembly coordination, as well as the detail design. This article presented the difficulties of the typical root joint of civil aircraft, specific load transition requirements, the root rib layout principle, key characteristics and comparison analysis of different main root joint concept. Based on the requirements, an optimized design philosophy for compliance compensation and assembly stress relaxation was presented, which had been validated to be feasible by test results. The key points of composite wing root joint design were discussed considering the composite mechanical characters and the corresponding proposal was provided.