Experimental Investigation of the Vibro-impact Capsule System

Dr. Yang Liu would like to acknowledge the financial support for the Small Research Grant (31841) by the Carnegie Trust for the Universities of Scotland. This work is also partially supported by the National Natural Science Foundation of China (Grant Nos. 11672257 and 11402224), the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20161314).Peer reviewedPublisher PD

Path-following analysis of the dynamical response of a piecewise-linear capsule system

Acknowledgements The first author has been supported by a Georg Forster Research Fellowship granted by the Alexander von Humboldt Foundation, GermanyPeer reviewedPreprin

Global dynamics of a harmonically excited oscillator with a play : Numerical studies

This work was supported by the National Secretariat of Science, Technology and Innovation of Ecuador (SENESCYT); the Escuela Superior Politécnica del Litoral of Ecuador (ESPOL); the National Natural Science Foundation of China (11272268, 11572263) and Scholarship of China. A.S.E. Chong and Y. Yue acknowledge the hospitality of the Centre of Applied Dynamics Research at the University of Aberdeen.Peer reviewedPostprin

Multi-modes approach to modelling of vortex-induced vibration

Acknowledgements A.P. would like to acknowledge the support of the National Subsea Research Institute (NSRI) UK. E.P. and M.W. are grateful for partial support provided by the Italian Ministry of Education, University and Research (MIUR) by the PRIN funded program 2010/11 N.2010MBJK5BPeer reviewedPostprin

VIV of flexible structures in 2D uniform flow

Acknowledgements V.K. would like to acknowledge the support of the Industrial University of Tyumen, Tyumen, Russia, and the State Program ”Global Education”, Russia. This work has been performed using the Maxwell High Performance Computing Cluster funded by the University of Aberdeen. Authors would like to express their gratitude to Dr Andrew Starkey for the advices regarding optimisation procedures, to Naveed Khan for the technical advices on accelerating computations and to Dr Andrey Postnikov for the productive discussions.Peer reviewedPostprin

2DOF CFD calibrated wake oscillator model to investigate vortex-induced vibrations

ACKNOWLEDGMENTS This work is supported by the National Subsea Research Institute (NSRI) UK.Peer reviewedPostprin

Experimental verification of the vibro-impact capsule model

Acknowledgments Dr. Yang Liu would like to acknowledge the financial support for the Small Research Grant (31841) by the Carnegie Trust for the Universities of Scotland.Peer reviewedPostprin

Calibration and comparison of VIV wake oscillator models for low mass ratio structures

V.K. would like to acknowledge the support of the Industrial University of Tyumen, Tyumen, Russia, and the State Program ”Global Education”, Russia. This work has been performed using the Maxwell High Performance Computing Cluster funded by the University of Aberdeen. Authors would like to express their gratitude to Dr Andrew Starkey for advices regarding optimization procedures and to Naveed Khan for technical advices on accelerating computations.Peer reviewedPostprin

Bifurcation analysis of vortex-induced vibration of low-dimensional models of marine risers

Funding Information: The first two authors acknowledge the financial supports of the National Natural Science Foundation of China (Nos. 11702111, 11732014), the Natural Science Foundation of Shandong Province (No. ZR2017QA005) and the State Scholarship Fund of CSC.Peer reviewedPostprin

Forward and backward motion control of a vibro-impact capsule system.

A capsule system driven by a harmonic force applied to its inner mass is considered in this study. Four various friction models are employed to describe motion of the capsule in different environments taking into account Coulomb friction, viscous damping, Stribeck effect, pre-sliding, and frictional memory. The non-linear dynamics analysis has been conducted to identify the optimal amplitude and frequency of the applied force in order to achieve the motion in the required direction and to maximize its speed. In addition, a position feedback control method suitable for dealing with chaos control and coexisting attractors is applied for enhancing the desirable forward and backward capsule motion. The evolution of basins of attraction under control gain variation is presented and it is shown that the basin of the desired attractors could be significantly enlarged by slight adjustment of the control gain improving the probability of reaching such an attractor