钢弹簧减振器高频失效浅析

High Frequency Failure Analysis of Steel Spring Shock Absorber

外力作用在固体上将使其产生整体加速运动和局部的弹性形变,如果固体的线度大于该固体中声波的半波长时,弹性形变就会在固体中形成声波。所以当钢弹簧隔振器的展开长度大于弹簧钢中声波的半波长时,钢弹簧中也会形成固体声波,高于该固体声波频率的振动能量就会沿弹簧中传播,使钢弹簧隔绝高频振动失效,产生所谓的"穿流"现象。

The external force on the solid could cause the overall acceleration motion and the local elastic deformation of the solid. If the maximum line of the solid was larger than a half wavelength of the solid sound wave, the elastic deformation would form a sound wave in the solid. Thus, if the spreading length of steel spring vibration isolator was greater than a half wavelength of the sound waves in the spring steel, a solid sound wave could be formed in the spring steel. The vibration energy which was higher than the wave frequency would be propagated along the spring, and this can cause the high frequency vibration failure of isolated steel spring, resulting in the so - called ＂pass through＂ phenomenon.