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negative damping ratio
相关语句
  负阻尼
     Negative Damping Ratio Due to Tainter Gate Vibration
     水工弧形钢闸门振动的负阻尼
短句来源
  相似匹配句对
     Eliminating Negative-damping Excitation Regulator
     可消除负阻尼的励磁控制器
短句来源
     Application of Negative Ion Damping Machine
     负离子增湿机的应用
短句来源
     Negative Damping Ratio Due to Tainter Gate Vibration
     水工弧形钢闸门振动的负阻尼
短句来源
     PAS was negative.
     PAS阴性。
短句来源
     From "Negative" to "Positive"
     从消极走向积极
短句来源
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A hydraulic expression of negative damping ratio of a tainter gate when a tangential vibration resulting from changing waterflow takes place on such a rigid body is introduced to define the negative damping ratio corresponding to the parametric resonance condition caused by the longitudinal constant force of compressional members and alternating force. Various types of vibration of the tainter gate are simplified into two kinds of compressional members, i.e., two simply supported ends and one simply...

A hydraulic expression of negative damping ratio of a tainter gate when a tangential vibration resulting from changing waterflow takes place on such a rigid body is introduced to define the negative damping ratio corresponding to the parametric resonance condition caused by the longitudinal constant force of compressional members and alternating force. Various types of vibration of the tainter gate are simplified into two kinds of compressional members, i.e., two simply supported ends and one simply supported end with one elastically supported end, and the relevant formula of Euler critical load of 1st kind is given. A formula of longitudinal force at member end is thus given approximately through kinetic equation. The reference values of pulsating pressure acting on supporting hinges are also given according to experiments, which will lay a foundation for discussing further the typical case of dynamic instability.

引入了弧形闸门小开度切向振动时因流量随时变化产生的水力负阻尼的表达式,定义了因压杆纵向恒定力及交变力引起的参数共振相应的负阻尼·对弧门振动的不同情况简化为两端铰支承和一端铰支一端弹性支承两种端点条件不同的压杆,并给出了相应的第一欧拉临界力的计算式·由动力方程给出了杆端纵向力的近似算式,根据实验资料给出了作用在支铰上的脉动压力的参考值,为讨论可能出现动力失稳的典型情况奠定了基础·

 
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