Yongkang Wang

Research on the Whirling and Vibration Characteristics of Steel–Titanium Alloy Composite Drill Strings for Ultra-Deep Wells

To address whirling- and vibration-induced failures in ultra-deep well drill strings caused by high slenderness ratios and complex loading conditions, this study establishes a nonlinear dynamic finite element model for a steel–titanium alloy composite drill string. The model is d...