Numerical Simulation Study on Vibration Reduction Effect of Flexible Cutting-Tooth Unit
Haitao Ren,
Jingwei Xu,
Xin Jia
et al.
Abstract:Under the conditions of drilling in gravel-bearing and heterogeneous stratas, the movement and force of the PDC bit during drilling are highly unstable. Irregular impact loads often cause fatigue failures such as tooth fracture, tooth breakage and delamination of the composite sheet. Dynamic impact load is the main cause of fatigue failure of cutting teeth, which seriously affects the rock-breaking performance of PDC bits. This paper proposes a flexible cutting tooth unit consisting of a central tooth, an elas… Show more
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