Load-carrying Capacity Analysis and Experimental Study of Radome Joint Structure
As an important component of aircraft guidance system,non-metal radomes have multiple functions such as heat protection,wave transmission and load bearing. It is connected to the aircraft body through high-temperature resistant adhesive agent. Radome is frequently subjected to harsh mechanical and thermal loads during the period of service,and the joint structure is often the weakness of strength design. Therefore,accurate simulation for mechanical behavior of the joint structure and achieving accurate prediction of load-carrying capacity are crucial for the structural design and optimization of radome. Based on bilinear cohesive model,the failure behavior of radome adhesive interface is numerically described by ABAQUS. And then the damage evolution of adhesive layer is simulated,and the accurate prediction of bearing performance of radome joint structure under flight thermo-mechanical environment is achieved. The corresponding experimental study is carried out. The experimental results are in good agreement with the simulated ones,verifying the validity of numerical method. It provides an effective way to solve bearing problem of aircraft-level radome joint structure.
radomecohesive modeljoint structurestrength predictionexperimental study
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万方数据
