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 a-mong 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 meth-od(DDAM)and time-domain analysis method are applied to the analysis of impact resistance simulation separately,and the simu-lation results of the two methods are compared.The analysis results show that the stress distribution and the weak region of struc-ture obtained by the two methods are basically the same with a higher calculation efficiency of DDAM.However,due to the conser-vative 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.
关键词
舰用雷达/抗冲击/动力学设计法/有限元仿真/时域分析法
Key words
shipborne radar/shock resistance/dynamic design method(DDAM)/finite element simulation/time domain simulation
维普
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