学术
摘 要:
飞机燃油密度高精度的测量对精确控制燃油量有重要作用。本文通过理论分析及ANSYS有限元分析软件对谐振式燃油密度传感器振动筒进行了振动模态分析,并利用正交实验设计法优化了不同振动模态、不同振动频率下振动筒的设计。分析结果表明：采用基本振型m=1,n=4,几何尺寸为L=2.9 cm,R=0.8 cm,t=0.20 mm的振动筒时,在密度范围为700-900 kg/m^3的航空煤油环境下,其谐振频率范围为7.5-8.5 kHz。符合设计目标频率在2-10 kHz的要求,可作为谐振式燃油密度测量系统振动筒的设计参考。[著者文摘]
文章出处:
《南京航空航天大学学报》-2008年40卷1期 -60-64页
分 类 号:
文献标识码:
A
文章编号:
1005-2615（2008）01-0060-05
Analyses and Design of Vibrational Tube in Aircraft Fuel Density Sensor
Sun Jianhong , Yang Lu （College of Aerospace Engineering, Nanjing University of Aeronautics ＆ Astronautics, Nanjing, 210016, China）
Abstract:
According to the thin shell theory, the modes and natural frequencies of vibrational tube in the measurement system of vibration fuel quantity density sensor are analyzed by ANSYS software. The geometrical sizes of the vibrational tube are optimized by the orthogonal experiment design method. Results show that the mode （m=1,n=4）is better for the vibrational tube when L=2.9 cm, R=0.8 cm, t=0.20 mm, and the frequency is 7.5-8.5 kHz when the fuel density is 700-900 kg/m^3. It is clear that the method is suitable to the design of the density sensor in aircraft fuel measurement system.[著者文摘]
Key words:
aircraft fueling ; density sensor ; fuel density ; vibrational tube ; cylindrical shell ; orthogonal method
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