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Complex dynamics of drill-strings: Theory and experiments
Conference ObjectAbstract: We investigate complex drill-string dynamics in a downhole drilling where strong nonlinear interactiPalabras claves:Autores:Kapitaniak M., Marian Wiercigroch, Nandakumar K., Vaziri V.Fuentes:scopusBifurcation analysis of a jeffcott rotor with a bearing clearance: Numerics and experiments
Conference ObjectAbstract: We introduce a two-degrees-of-freedom, non-smooth model of a Jeffcott rotor with a bearing clearancePalabras claves:Autores:Joseph Páez Chávez, Marian Wiercigroch, Vaziri V.Fuentes:googlescopusBifurcation scenarios in helical buckling of slender rods using new FE
ArticleAbstract: We develop a new Finite Element to accurately model twisting of rods and capture the bifurcation scePalabras claves:Bifurcations, finite element, Helical buckling, Post-buckling configurations, Twisted rodsAutores:Kapitaniak M., Marian Wiercigroch, Vaziri V.Fuentes:scopusCalibrated FEM modelling of rock cutting with PDC cutter
Conference ObjectAbstract: Complexity of bit-rock interactions and formation fracture makes rock drilling a challenging task frPalabras claves:Autores:Kapitaniak M., Ma L., Marian Wiercigroch, Vaziri V., Yari N.Fuentes:scopusFinite element analysis of drill pipe-slip system
ArticleAbstract: As an important tool for tripping of a drill-string, a drill-pipe (DP)-slip system directly affectsPalabras claves:Drill-pipe, finite element analysis, Friction, Slip insert, Stress distributionAutores:Guo B., Kapitaniak M., Marian Wiercigroch, Tang L., Vaziri V.Fuentes:scopusExperimental control for initiating and maintaining rotation of parametric pendulum
ArticleAbstract: In this paper, the authors have studied experimentally the control methods of a parametric pendulumPalabras claves:Autores:Marian Wiercigroch, Najdecka A., Vaziri V.Fuentes:scopusExperimental studies of forward and backward whirls of drill-string
ArticleAbstract: In this work we investigate forward and backward whirls of a drill-string using a novel experimentalPalabras claves:Co-existing attractors, Drill-string dynamics, experimental studies, Forward and backward whirls, Lateral vibrationAutores:Joseph Páez Chávez, Kapitaniak M., Marian Wiercigroch, Vaziri V.Fuentes:googlescopusDrilling Efficiently, Durably and Consistently Through Cherts and Conglomerates with PDC Bits is Possible
Conference ObjectAbstract: Drilling into harsh environment with heterogeneous formations including chert or conglomerate is usuPalabras claves:Autores:Addae D., Cuillier B., Elabassi E.A., Hafez K., Kapitaniak M., Marian Wiercigroch, Reboul S., Tejedor M.A., Vaziri V., Yari N.Fuentes:scopusDynamics, synchronization and control of parametric pendulums
Conference ObjectAbstract: In this work the dynamics and synchronization of the coupled parametric pendulums system is examinedPalabras claves:Delayed feedback control, Parametric pendulum, Synchronization of pendulumsAutores:Marian Wiercigroch, Najdecka A., Vaziri V.Fuentes:scopusNonlinear dynamics of lump mass model of drill-string in horizontal well
ArticleAbstract: We develop a dynamic model of a drill-string in a horizontal well having six Degrees-Of-Freedom, whiPalabras claves:Complex whirling, Coupled motions, Drill-string dynamics, Horizontal well, State-dependent delayAutores:Huang Z., Kapitaniak M., Ma Y., Marian Wiercigroch, Vaziri V., Xie D.Fuentes:scopus