Drill string nonlinear vibrations: Experimental studies and finite-element analysis

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Abstract

In the present work, nonlinear vibrations of drill strings are studied. A laboratory scale arrangement consisting of a flexible rod with rotor-stator system is used to study the system dynamics. A finite-element model has been developed to study the system dynamics. Qualitative changes in the system dynamics are examined with respect to variation in the rotation speed, with a focus on whirling and stick-slip motions. The finite-element model results are compared with experimental results. It is believed that the developed finite-element model can be important for the design analysis of drill strings as well as understanding the system dynamics.

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APA

Kanzari, M., Shahin, I. M., Alqaradawi, M. Y., & Balachandran, B. (2018). Drill string nonlinear vibrations: Experimental studies and finite-element analysis. In Journal of Physics: Conference Series (Vol. 1075). Institute of Physics Publishing. https://doi.org/10.1088/1742-6596/1075/1/012010

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