self-induced oscillation meaning in English
自激振荡
Examples
- The influence of the blowing factors to the flutter and the lift coefficient is analyzed . secondly , the self - induced vibration of seals are analyzed by fluid - structure coupling numerical method . the self - induced oscillation of the seals will occur at large rotational speed , however , this phenomenon ca n ' t be simulated with the
采用本文的流固耦合方法成功地捕捉到频率锁定的现象，且发现随着转速的提高，固有频率也增大，从而证明高转速下密封转子会发生自激振动，传统的刚度阻尼方法对此是无法解释的。 - Firstly , the airfoil ' s classic flutter ( at small attack angle ) , stall flutter ( near the static stall angle ) and response ( at large attack angle ) are analyzed . it is found from the numerical results that " lock - in " will occur at certain freestream velocity range near the static stall angle , where the frequency of the vortex will be equal to the natural frequency and the flutter has the characteristic of self - induced oscillation . when the attack angle is far from the static stall angle , the vortex will have its own frequency , which differs from the natural frequency , and the flutter has the characteristic of forced oscillation
首先研究了二维翼型的古典颤振(小攻角) 、失速颤振(失速攻角)和动力响应问题(大攻角) ，得到以下结论：在静态失速攻角附近的一定来流速度范围内，分离涡会发生频率锁定现象，分离流的频率与固有频率趋于相同，这时的振动呈现自激振动的特点；远离失速攻角时分离流频率则摆脱固有频率的影响，此时的振动具有强迫振动的特点。