Drill string vibration is a common phenomenon in the process of well drilling. Drilling string resonance is the main reason of the drilling string failure.
钻柱振动是在当前钻井工程中的普遍现象，对钻井的影响很大，钻柱共振是钻柱失效的主要原因。
At high gearing speed the combined stresses of centrifugal load and resonance vibration at the notches are the main cause for the catastrophic failure of the bevel gear.
锥齿轮在高转速下，在槽底的离心应力和振动应力的组合应力是引起齿轮破坏的主要原因。
At high gearing speed the combined stresses of centrifugal load and resonance vibration at the notches are the main cause for the catastrophic failure of the bevel gear.
锥齿轮在高转速下，在槽底的离心应力和振动应力的组合应力是引起齿轮破坏的主要原因。
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