On the dynamic behaviour of rotating shafts under combined axial and torsional loads
Sign Up to like & getrecommendations! Published in 2019 at "Meccanica"
DOI: 10.1007/s11012-019-00987-4
Abstract: A comprehensive dynamic study on a distributed parameter model of a straight uniform rotating shaft is developed, aimed at presenting some clarifications and corrections to published results, together with novel contributions. The model includes the… read more here.
Keywords: rotating shafts; axial torsional; dynamic behaviour; shafts combined ... See more keywords
Criticality of bifurcation in the tuned axial–torsional rotary drilling model
Sign Up to like & getrecommendations! Published in 2017 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-017-3859-5
Abstract: We study the bifurcation characteristics of a lumped-parameter model of rotary drilling with 1:1 internal resonance between the axial and the torsional modes which leads to the largest stability thresholds. For this special case, the… read more here.
Keywords: rotary drilling; axial torsional; model; bifurcation ... See more keywords
Comparative analysis of different approaches for computing axial, torsional and bending stiffnesses of cables and wire ropes
Sign Up to like & getrecommendations! Published in 2021 at "Engineering Structures"
DOI: 10.1016/j.engstruct.2021.112487
Abstract: Abstract In the field of cables and wire ropes modeling, many different approaches have been developed over the years to simulate the mechanical response of such structural components. The present work aims to compare, for… read more here.
Keywords: axial torsional; comparative analysis; analysis different; cables wire ... See more keywords
A discussion on the decoupling assumption of axial and torsional dynamics in bit-rock models
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2020.108070
Abstract: Abstract A common strategy for analyzing the stability of coupled axial and torsional dynamics in drilling is by using a two-degree-of-freedom mass-spring-damper model derived as a second-order ordinary differential equation. This implies using a single… read more here.
Keywords: torsional dynamics; system; axial torsional; bit rock ... See more keywords
Effect of Implant Linkage on Axial and Rotational Stiffness of Nail-Plate Constructs for Comminuted Distal Femoral Fractures.
Sign Up to like & getrecommendations! Published in 2023 at "Journal of orthopaedic trauma"
DOI: 10.1097/bot.0000000000002594
Abstract: OBJECTIVES To determine the effect of linking the intramedullary nail and the laterally applied locking plate bone to treat comminuted distal femur fractures and allow for immediate weight bearing.. METHODS comminuted extra-articular distal femur fractures… read more here.
Keywords: axial torsional; comminuted distal; plate; rotational stiffness ... See more keywords
Mixed Axial-Torsional Anomaly in Weyl Semimetals.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review letters"
DOI: 10.1103/physrevlett.122.056601
Abstract: We show that Weyl semimetals exhibit a mixed axial-torsional anomaly in the presence of axial torsion, a concept exclusive of these materials with no known natural fundamental interpretation in terms of the geometry of spacetime.… read more here.
Keywords: weyl semimetals; axial torsional; mixed axial; torsional anomaly ... See more keywords
Suppressing Coupled Axial–Torsional Vibration of Drill-String System Considering Regenerative Cutting Induced Delay and Actuator Saturation
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2022.3231288
Abstract: This article is concerned with suppression of coupled axial–torsional vibration of drill-string system, taking into account the state-dependent delay inherited from regenerative cutting of drill-bit on rock and actuator saturation of drill-rig. Note that, in… read more here.
Keywords: drill string; torsional vibration; axial torsional; coupled axial ... See more keywords