航空拉杆组件的结构特点及强度计算分析

Structure Characteristics and Strength Calculation Analysis of the Aviation Tie Rod Assembly

航空拉杆组件广泛应用于飞机舱门操纵系统和机身机翼结构支承等关键部位,属定制化产品,具有高承载、耐疲劳以及轻量化等特点。针对国内航空拉杆组件普遍存在的产品正向设计理论研究不系统、不全面,生产设备相对落后,加工工艺不成熟,设计制造的航空拉杆组件强度及疲劳性能满足不了新型飞机的设计使用要求等问题,通过开展航空拉杆组件的产品结构特点剖析,研究产品设计以及抗拉强度、抗压强度理论计算机理;选取典型规格产品进行极限拉伸载荷和极限压缩载荷理论计算,结合仿真分析方法对理论计算结果进行校核;并通过产品的实际试验论证强度计算方法的合理性和准确性。经仿真分析及试验验证结果表明,航空拉杆组件的理论计算原理合理可行,可作为航空拉杆组件设计及强度校核的依据。

The tie rod assembly was widely used in the key parts of the cabin door control system and the wing structure support of the fuselage,which belonged to customized products and had the characteristics of high load,fatigue resistance,light weight and so on.In view of the fact that the theoretical research of forward design of products was not systematic and comprehensive,the production equipment was relatively backward and the processing technology was not mature,including the strength and fatigue performance of the tie rod assembly could not meet the requirements of the new aircraft.By analyzing the structural characteristics of the aviation tie rod assembly,and researching the product design and the theoretical computing mechanism of strength of extension and compressive strength,I selected typical products to carry out theoretical calculation of ultimate tensile load and ultimate compressive load,and combined with simulation analysis method,the theoretical calculation results were checked,the rationality and accuracy of the strength calculation method were demonstrated through the actual test of the product.The results of simulation and experiment showed that the theoretical calculation principle was reasonable and feasible,which could be used as the basis for the design and strength check of the aviation tie rod assembly.