直升机平台撑杆风激振动预报  

Prediction of Wind-Induced Vibration of Helicopter Platform Support Rod

作　　者：张彦方 谷家扬 韦琪 ZHANG Yanfang;GU Jiayang;WEI Qi

机构地区：[1]中国铁建大桥工程局集团有限公司,天津300308 [2]江苏科技大学海洋装备研究院,江苏镇江212000

出　　处：《江苏船舶》2024年第5期1-4,15,共5页Jiangsu Ship

基　　金：江苏省自然科学基金—面上项目(BK20231255)。

摘　　要：面对复杂海况下直升机撑杆易产生涡激振动现象,采用数值方法研究圆形结构物的涡激振动,并与DNV GL-RP-C205规范值进行对比,验证数值方法的准确性。基于降低涡激振动频率和提高撑杆固有频率对改善撑杆涡激现象进行研究,得到不同方式下的改善效果和适用范围,总结出一套适用于实际工程的降低撑杆涡激振动的方法。In the face of the phenomenon of vortex-induced vibration that is prone to occur in helicopter struts under complex sea conditions,a numerical method is employed to study the vortex-induced vibration of circular structures.This is then compared with the specification values of DNV GL-RP-C205 to verify the accuracy of the numerical method.Research is conducted on improving the vortex-induced phenomenon of struts by reducing the frequency of vortex-induced vibration and increasing the natural frequency of the struts.The improvement effects and applicable ranges under diferent methods are obtained,and a set of techniques for reducing vortex-induced vibration of struts suitable for practical engineering is summarized.

关 键 词：撑杆 涡激振动 直升机平台 固有频率 

分 类 号：U661.44[交通运输工程—船舶及航道工程]