FAST馈源支撑塔的固有频率测试

Science Technology and Engineering(2016)

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Abstract
FAST馈源支撑系统结构复杂,在进行馈源支撑塔的结构设计时,充分考虑馈源支撑塔的振动对馈源舱的控制带来的影响,要求馈源支撑塔的固有频率处于1 Hz以内.以模态分析理论和有限元方法为基础,使用Ansys对馈源支撑塔进行仿真,计算前三阶固有频率.通过仪器对六座支撑塔的固有频率进行测试,比较和分析前三阶固有频率的计算值与试验值,以对支撑塔的刚度进行检验和评估.
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Key words
FAST,feed supporting tower,natural frequency,modal analysis
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