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将YZ—55牙轮钻机的实测应力信号作为计算载荷谱,利用功率谱密度(P.S.D)法对钻机各部件作出了疲劳寿命估算,从而校核了整机的动态强度。
The measured stress signal of YZ-55 roller cone rig is taken as the calculation load spectrum, and the fatigue life of each component of the rig is estimated by the power spectrum density (P.S.D) method to check the dynamic strength of the whole machine.