基于振动测试的水下牵引机转向舵结构动力修改  

Dynamic Modification of Steering Rudder Structure of Wave Gliders Based on Vibration Test

作　　者：王志斌 宁凡 刘聪 王志伟 高志鹏 赵坚 WANG Zhibin;NING Fan;LIU Cong;WANG Zhiwei;GAO Zhipeng;ZHAO Jian(School of Control and Mechanical Engineering,Tianjin Construction University,Tianjin 300384,China)

机构地区：[1]天津城建大学控制与机械工程学院,天津300384

出　　处：《噪声与振动控制》2021年第3期135-139,共5页Noise and Vibration Control

基　　金：天津市自然科学基金重点资助项目(16JCZDJ38600);国家青年基金资助项目(51707128);天津市科学发展战略研究计划资助项目(19ZLZXZF00330);天津市研究生科研创新资助项目(2019YJSS0011)。

摘　　要：水下牵引机转向舵在水下波浪涌动的作用下,会使其极易产生振动,从而影响运行姿态的准确性和水下牵引机的稳定性。以水下牵引机转向舵为研究对象,首先,采用计算模态分析方法,得出转向舵计算模态结果,指导试验模态分析合理布置测点及激励点;其次,利用试验模态分析方法,得出转向舵的模态频率及对应的模态振型,验证其有限元模型的正确性。最后,基于此提出转向舵结构动力修改方案,采用模态综合法对动力修改方案进行计算模态分析,得到修改后转向舵的模态参数,并验证该修改方案的合理性。The steering gear of the wave glider is subjected to underwater wave surging,which will cause vibration easily,thereby affect the accuracy of the operation attitude and the stability of the wave glider.In this paper,performance of the wave glider steering gear is studied.Firstly,the calculation mode analysis method is used to obtain the calculation mode results of the steering rudder to guide the test modal analysis and the arrangement of the measurement points and the excitation points.Then,the test modal analysis method is used to obtain the modal frequency of the steering rudder and the corresponding modal vibration shape.And the correctness of the finite element model is verified.Finally,a steering rudder optimization scheme is proposed.The modal synthesis method is used to analyze the calculation modal of the optimization scheme.The modal parameters of the optimized steering rudder are obtained.And the rationality of the optimization scheme is verified.

关 键 词：振动与波 水下牵引机 转向舵 试验模态分析 结构动力修改 

分 类 号：TH113[机械工程—机械设计及理论]