船用新型雷达桅振动特性

应对某船的船体结构发生变化，设计新型雷达桅及两种加强方案。建立有限元模型，采用模态叠加法得到两种新方案的纵向和横向固有频率及振型，并与原方案进行谐响应分析。对比分析发现，新方案的振动响应较为理想，其结论可供同类型船舶设计时参考。

Vibration Characteristics of New Marine Radar Mast

A new radar mast and two strengthening schemes are designed to deal with the change of hull structure of a ship. The finite element model is established, the longitudinal and transverse natural frequencies and vibration modes of two new schemes are obtained with the modal superposition method, and the harmonic response analysis is made with the original scheme. The comparative analysis shows that the vibration response of new scheme is more ideal, and the conclusion can provide reference for the design of similar ships.