[1]孙建红,杨璐.谐振式燃油密度测量系统中振动筒的频率特性分析[J].南京理工大学学报(自然科学版),2008,(01):37-39.
 SUN Jian-hong,YANG Lu.Frequency Characteristics of Vibrational Tube in Measurement System of Vibration Fuel Density[J].Journal of Nanjing University of Science and Technology,2008,(01):37-39.
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谐振式燃油密度测量系统中振动筒的频率特性分析
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2008年01期
页码:
37-39
栏目:
出版日期:
2008-02-28

文章信息/Info

Title:
Frequency Characteristics of Vibrational Tube in Measurement System of Vibration Fuel Density
作者:
孙建红;杨璐;
南京航空航天大学航空宇航学院, 江苏南京210016
Author(s):
SUN Jian-hongYANG Lu
College of Aerospace Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China
关键词:
密度传感器 燃油密度 振动筒 圆柱壳
Keywords:
density sensor fuel density vibrational tube cylindrical shell
分类号:
TP274
摘要:
针对谐振式燃油密度测量系统中振动筒的频率特性,利用ANSYS软件对振动筒(圆柱壳)进行了振动模态的力学分析,并对比了在不同约束条件下振动频率的差异。结果表明:轴向半波数m=1、径向振型n=3和4是合适的振型;同时对两种不同约束条件下振动筒的振动频率分析的结果显示,其基频相差3倍左右;研究结果表明,对振动筒采用上端面为自由状态、下端面为全约束的约束方式,测量系统的频率可以优选在2~10 kHz的范围,易于实现激振,又远离飞机结构其他干扰振动频率,能为谐振式燃油密度测量系统设计提供参考。
Abstract:
In view of the frequency characteristics of the vibrational tube in the measurement system of the vibration fuel density,this paper analyses the mechanism of the vibrational model of the cylindrical shell by ANSYS and compares the differences of the vibrational frequency in different constrained conditions.The results show: the axial wave number m=1,transverse n=3 or 4 are suitable,the frequency differences under different boundary conditions are three times and the frequency ranges from 2 to 10 kHz in design conditons by comparing two cases with free or bound ends of tube.The optimized ranges help to carry out the vibration and make airplane structures avoid disturbing frequency.It is of significant application in the engineering design of the measurement system of vibrational fuel density.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 孙建红( 1968- ), 男, 博士, 副教授, 主要研究方向: 人机与环境工程, 环境流体力学与工程传热, 空气 动力学, Em ail: jhsun@ nuaa. edu. cn。
更新日期/Last Update: 2012-12-05