A Study on Shock Resistance Simulation of Shipborne Radar

The anti-impact design is an important part of the structural design of the shipborne radar. The commonly used numerical simulation methods in the impact resistance analysis are introduced, and the difference in efficiency and application scenarios among these methods is analyzed, providing a basis for the selection of simulation methods. A finite element model for a shipborne radar is created. To illustrate the difference in analysis results generated by different simulation methods, the dynamic design method (DDAM) and time-domain analysis method are applied to the analysis of impact resistance simulation separately, and the simulation results of the two methods are compared. The analysis results show that the stress distribution and the weak region of structure obtained by the two methods are basically the same with a higher calculation efficiency of DDAM. However, due to the conservative nature of the DDAM and overlooking of the dense low frequency band of the the modal problem, the calculated value of the stress becomes larger. So the time-domain analysis method is recommended to the analysis of impact resistance simulation for the shipborne radar.