Research on Anti-overturning Fatigue of a Microwave Intelligence Radar under Wind Load

The wind load is the main load of the microwave intelligence radar. The impact of wind load must be considered when the radar system is designed. When working, the radar keeps rotating and bears the dynamic wind load that changes with time, so dynamic stress generates within it, which causes fatigue damage. The anti-overturning legs of the vehicle-borne radar mainly bear the overturning moment caused by the wind load and belong to the dangerous parts of the vehicle-borne radar. The fatigue strength of the anti-overturning legs under wind load should be considered in the design. In this paper the stress response of anti-overturning legs under wind load is determined by finite element simulation. The anti-overturning leg test model is designed and processed according to the proportional design. The fatigue life of anti-overturning legs is determined by fatigue test, which provides a basis for the radar system design.