Jon du Bois

Journal papers show/hide

C.S. Beaverstock, M.I. Friswell, S. Adhikari, T.S. Richardson and J.L. du Bois (2015), "Automatic mode tracking for flight dynamic analysis using a spanning algorithm ", Aerospace Science and Technology , pp. - .
PDF DOI bibTeX abstract


@article{Beaverstock.etal2015Automaticmodetracking,

author={C. S. Beaverstock and M. I. Friswell and S. Adhikari and T. S. Richardson and J. L. {du Bois}},

title={Automatic mode tracking for flight dynamic analysis using a spanning algorithm },

journal={Aerospace Science and Technology },

year={2015},

pages={ - },

doi={10.1016/j.ast.2015.08.013}

}

P.R. Thomas, U. Bhandari, S. Bullock, T.S. Richardson and J.L. du Bois (2014), "Advances in air to air refuelling ", Progress in Aerospace Sciences , 71, pp. 14 - 35.
PDF DOI bibTeX abstract


@article{Thomas.etal2014Advancesinair,

author={Peter R. Thomas and Ujjar Bhandari and Steve Bullock and Thomas S. Richardson and Jonathan L. {du Bois}},

title={Advances in air to air refuelling },

journal={Progress in Aerospace Sciences },

year={2014},

volume={71},

pages={14 - 35},

doi={10.1016/j.paerosci.2014.07.001}

}

C. Martínez, T. Richardson, P. Thomas, J.L. du Bois and P. Campoy (2013), "A vision-based strategy for autonomous aerial refueling tasks", Robotics and Autonomous Systems, 61(8), , pp. 876–895.
PDF DOI bibTeX abstract


@article{Martinez.etal2013visionbasedstrategy,

author={Mart\'{i}nez, Carol and Richardson, Thomas and Thomas, Peter and {du Bois}, Jonathan Luke and Campoy, Pascual},

title={A vision-based strategy for autonomous aerial refueling tasks},

journal={Robotics and Autonomous Systems},

year={2013},

volume={61},

number={8},

publisher={Elsevier BV},

pages={876--895},

doi={10.1016/j.robot.2013.02.006}

}

S. Adhikari, L. Pastur, A. Lytova and J.L. du Bois (2012), "Eigenvalue density of linear stochastic dynamical systems: A random matrix approach", Journal of Sound and Vibration, 331(5), , pp. 1042–1058.
PDF DOI bibTeX abstract


@article{Adhikari.etal2012Eigenvaluedensitylinear,

author={Adhikari, S. and Pastur, L. and Lytova, A. and {du Bois}, Jonathan Luke},

title={Eigenvalue density of linear stochastic dynamical systems: A random matrix approach},

journal={Journal of Sound and Vibration},

year={2012},

volume={331},

number={5},

publisher={Elsevier BV},

pages={1042--1058},

doi={10.1016/j.jsv.2011.10.027}

}

B. Titurus, J.L. du Bois and N. Lieven (2012), "Modeling and Testing of a Semiactive Hydraulic Damper in Periodic Working Regimes", AIAA Journal, 50(4), , pp. 844–854.
PDF DOI bibTeX abstract


@article{Titurus.etal2012ModelingandTesting,

author={Titurus, Branislav and {du Bois}, Jonathan Luke and Lieven, Nick},

title={Modeling and Testing of a Semiactive Hydraulic Damper in Periodic Working Regimes},

journal={AIAA Journal},

year={2012},

volume={50},

number={4},

publisher={American Institute of Aeronautics and Astronautics (AIAA)},

pages={844--854},

doi={10.2514/1.j051152}

}

J.L. du Bois, S. Adhikari and N.A.J. Lieven (2011), "On the Quantification of Eigenvalue Curve Veering: A Veering Index", J. Appl. Mech., 78(4), , pp. 041007.
PDF DOI bibTeX abstract


@article{duBois.etal2011QuantificationEigenvalueCurve,

author={{du Bois}, Jonathan Luke and Adhikari, Sondipon and Lieven, Nick A. J.},

title={On the Quantification of Eigenvalue Curve Veering: A Veering Index},

journal={J. Appl. Mech.},

year={2011},

volume={78},

number={4},

publisher={ASME International},

pages={041007},

doi={10.1115/1.4003189}

}

B. Titurus, J.L. du Bois, N. Lieven and R. Hansford (2010), "A method for the identification of hydraulic damper characteristics from steady velocity inputs", Mechanical Systems and Signal Processing, 24(8), , pp. 2868–2887.
PDF DOI bibTeX abstract


@article{Titurus.etal2010methodidentificationhydraulic,

author={Titurus, Branislav and {du Bois}, Jonathan Luke and Lieven, Nick and Hansford, Robert},

title={A method for the identification of hydraulic damper characteristics from steady velocity inputs},

journal={Mechanical Systems and Signal Processing},

year={2010},

volume={24},

number={8},

publisher={Elsevier BV},

pages={2868--2887},

doi={10.1016/j.ymssp.2010.05.021}

}

J.L. du Bois, S. Adhikari and N.A.J. Lieven (2009), "Eigenvalue curve veering in stressed structures: An experimental study", Journal of Sound and Vibration, 322(4-5), , pp. 1117–1124.
PDF DOI bibTeX abstract


@article{duBois.etal2009Eigenvaluecurveveering,

author={{du Bois}, Jonathan Luke and Adhikari, Sondipon and Lieven, Nick A. J.},

title={Eigenvalue curve veering in stressed structures: An experimental study},

journal={Journal of Sound and Vibration},

year={2009},

volume={322},

number={4-5},

publisher={Elsevier BV},

pages={1117--1124},

doi={10.1016/j.jsv.2008.12.014}

}

J.L. du Bois, N.A.J. Lieven and S. Adhikari (2008), "Error Analysis in Trifilar Inertia Measurements", Experimental Mechanics, 49(4), , pp. 533–540.
PDF DOI bibTeX abstract


@article{duBois.etal2008ErrorAnalysisin,

author={{du Bois}, Jonathan Luke and Lieven, Nick A. J. and Adhikari, Sondipon},

title={Error Analysis in Trifilar Inertia Measurements},

journal={Experimental Mechanics},

year={2008},

volume={49},

number={4},

publisher={Springer Science + Business Media},

pages={533--540},

doi={10.1007/s11340-008-9142-4}

}

D.S. McGrath, Z. Daniil, P. Foley, J.L. du Bois, P.A. Lympany, P. Cullinan and R.M. du Bois (2000), "Epidemiology of familial sarcoidosis in the UK", Thorax, 55(9), , pp. 751–754.
PDF DOI bibTeX abstract


@article{McGrath.etal2000Epidemiologyfamilialsarcoidosis,

author={D S McGrath and Z Daniil and P Foley and J L {du Bois} and P A Lympany and P Cullinan and R M {du Bois}},

title={Epidemiology of familial sarcoidosis in the UK},

journal={Thorax},

year={2000},

volume={55},

number={9},

publisher={BMJ},

pages={751--754},

doi={10.1136/thorax.55.9.751}

}

Conference proceedings show/hide

L. Barbini, M.O.T. Cole, A.J. Hillis and J.L. du Bois (2015), "WEAK SIGNAL DETECTION BASED ON TWO DIMENSIONAL STOCHASTIC RESONANCE", EUSIPCO, Nice, France, 2015.
PDF bibTeX


@inproceedings{Barbini.etalWEAKSIGNALDETECTION,

author={Leonardo Barbini and Matthew O. T. Cole and Andrew J. Hillis and Jonathan L. du Bois},

title={WEAK SIGNAL DETECTION BASED ON TWO DIMENSIONAL STOCHASTIC RESONANCE},

journal={EUSIPCO},

year={2015},

address={Nice, France},

volume={2015},

booktitle={EUSIPCO},

}

M. Bolien, P. Iravani and J.L. du Bois (2015), "Robotic Pseudo-Dynamic Testing (RPsDT) of Contact-Impact Scenarios", TAROS, Liverpool, UK, 2015.
PDF bibTeX


@inproceedings{Bolien.etalRoboticPseudoDynamic,

author={Mario Bolien and Pejman Iravani and Jonathan L du Bois},

title={Robotic Pseudo-Dynamic Testing (RPsDT) of Contact-Impact Scenarios},

journal={TAROS},

year={2015},

address={Liverpool, UK},

volume={2015},

booktitle={TAROS},

}

J.L. du Bois (2014), "A Regenerative Approach to Energy Efficient Hydraulic Vibration Control", Special Topics in Structural Dynamics, Volume 6, Conference Proceedings of the Society for Experimental Mechanics Series, Springer International Publishing, Orlando, FL, pp. 211-220.
PDF DOI bibTeX


@incollection{duBois2014RegenerativeApproachto,

author={Jonathan L. {du Bois}},

title={A Regenerative Approach to Energy Efficient Hydraulic Vibration Control},

journal={Special Topics in Structural Dynamics, Volume 6},

year={2014},

address={Orlando, FL},

series={Conference Proceedings of the Society for Experimental Mechanics Series},

booktitle={Special Topics in Structural Dynamics, Volume 6},

publisher={Springer International Publishing},

pages={211-220},

doi={10.1007/978-3-319-04729-4_17}

isbn={978-3-319-04728-7}

}

J.L. du Bois (2014), "A Strategy for Improving Performance in Real Time Hybrid Testing", Dynamics of Civil Structures, Volume 4, Conference Proceedings of the Society for Experimental Mechanics Series, Springer International Publishing, Orlando, FL, pp. 219-225.
PDF DOI bibTeX


@incollection{duBois2014StrategyImprovingPerformance,

author={Jonathan L. {du Bois}},

title={A Strategy for Improving Performance in Real Time Hybrid Testing},

journal={Dynamics of Civil Structures, Volume 4},

year={2014},

address={Orlando, FL},

series={Conference Proceedings of the Society for Experimental Mechanics Series},

booktitle={Dynamics of Civil Structures, Volume 4},

publisher={Springer International Publishing},

pages={219-225},

doi={10.1007/978-3-319-04546-7_25}

isbn={978-3-319-04545-0}

}

U. Bhandari, P.R. Thomas, T.S. Richardson and J.L. du Bois (2013), "Bow Wave Effect in Probe and Drogue Aerial Refuelling", Guidance, Navigation, and Control and Co-located Conferences, American Institute of Aeronautics and Astronautics, Boston, MA, 2013, pp. –.
PDF DOI bibTeX


@incollection{Bhandari.etal2013BowWaveEffect,

author={Bhandari, Ujjar and Thomas, Peter R. and Richardson, Thomas S. and {du Bois}, Jonathan L.},

title={Bow Wave Effect in Probe and Drogue Aerial Refuelling},

journal={Guidance, Navigation, and Control and Co-located Conferences},

year={2013},

address={Boston, MA},

volume={2013},

booktitle={Guidance, Navigation, and Control and Co-located Conferences},

publisher={American Institute of Aeronautics and Astronautics},

pages={--},

doi={10.2514/6.2013-4695}

}

P. Thomas, T. Richardson and J.L. du Bois (2013), "Robotic Relative Motion Reproduction for Air to Air Refuelling Simulation", 5th European Conference for Aeronautics and Space Sciences, Munich, Germany.
PDF bibTeX


@inproceedings{Thomas.etal2013RoboticRelativeMotion,

author={Thomas, Peter and Richardson, Thomas and {du Bois}, Jonathan Luke},

title={Robotic Relative Motion Reproduction for Air to Air Refuelling Simulation},

journal={5th European Conference for Aeronautics and Space Sciences},

year={2013},

address={Munich, Germany},

booktitle={5th European Conference for Aeronautics and Space Sciences},

}

J. du Bois, P. Thomas and T. Richardson (2012), "Control methodologies for relative motion reproduction in a robotic hardware in the loop simulation of aerial refuelling", AIAA Guidance, Navigation and Control Conference, Minneapolis, MN.
PDF bibTeX


@inproceedings{duBois.etal2012Controlmethodologiesrelative,

author={Jonathan {du Bois} and Peter Thomas and Thomas Richardson},

title={Control methodologies for relative motion reproduction in a robotic hardware in the loop simulation of aerial refuelling},

journal={AIAA Guidance, Navigation and Control Conference},

year={2012},

address={Minneapolis, MN},

booktitle={AIAA Guidance, Navigation and Control Conference},

}

J. du Bois, P. Thomas and T. Richardson (2012), "Development of a relative motion facility for simulations of autonomous air to air refuelling", Aerospace Conference, 2012 IEEE, Big Sky, MT, pp. 1-12.
PDF DOI bibTeX


@inproceedings{duBois.etal2012Developmentrelativemotion,

author={{du Bois}, J.L. and Thomas, P.R. and Richardson, T.S.},

title={Development of a relative motion facility for simulations of autonomous air to air refuelling},

journal={Aerospace Conference, 2012 IEEE},

year={2012},

address={Big Sky, MT},

booktitle={Aerospace Conference, 2012 IEEE},

pages={1-12},

doi={10.1109/AERO.2012.6187309}

}

J.L. du Bois, N.A.J. Lieven and S. Adhikari (2012), "A tensioned cable as an adaptive tuned vibration absorber for response suppression in rotorcraft", ISMA 2012 International Conference on Noise and Vibration Engineering, Leuven, Belgium.
PDF bibTeX


@inproceedings{duBois.etal2012tensionedcableas,

author={Jonathan Luke {du Bois} and Nick A. J. Lieven and Sondipon Adhikari},

title={A tensioned cable as an adaptive tuned vibration absorber for response suppression in rotorcraft},

journal={ISMA 2012 International Conference on Noise and Vibration Engineering},

year={2012},

address={Leuven, Belgium},

booktitle={ISMA 2012 International Conference on Noise and Vibration Engineering},

}

J.L. du Bois, P. Newell, S. Bullock, P. Thomas and T. Richardson (2012), "Vision based closed-loop control systems for satellite rendezvous with model-in-the-loop validation and testing", 23rd International Symposium on Space Flight Dynamics, Pasadena, CA.
PDF bibTeX


@inproceedings{Bois.etal2012Visionbasedclosed,

author={Jonathan L {du Bois} and Peter Newell and Steve Bullock and Peter Thomas and Thomas Richardson},

title={Vision based closed-loop control systems for satellite rendezvous with model-in-the-loop validation and testing},

journal={23rd International Symposium on Space Flight Dynamics},

year={2012},

address={Pasadena, CA},

booktitle={23rd International Symposium on Space Flight Dynamics},

}

J. du Bois, B. Titurus and N. Lieven (2010), "Transfer Dynamics Cancellation in Real-Time Dynamic Substructuring", ISMA2010 International Conference on Noise and Vibration Engineering, Leuven, Belgium, pp. 1891–1914.
PDF bibTeX


@inproceedings{duBois.etal2010TransferDynamicsCancellation,

author={{du Bois}, JL and Titurus, Branislav and Lieven, NAJ},

title={Transfer Dynamics Cancellation in Real-Time Dynamic Substructuring},

journal={ISMA2010 International Conference on Noise and Vibration Engineering},

year={2010},

address={Leuven, Belgium},

booktitle={ISMA2010 International Conference on Noise and Vibration Engineering},

pages={1891--1914},

}

B. Titurus, J. du Bois, N.A. Lieven and R. Hansford (2010), "Model uncertainty in identification of the static characteristics of the hydraulic damper", Tenth International Conference on Recent Advances in Structural Dynamics, Southampton, UK.
PDF bibTeX


@inproceedings{Titurus.etal2010Modeluncertaintyin,

author={Branislav Titurus and Jonathan {du Bois} and Nick A.J. Lieven and Robert Hansford},

title={Model uncertainty in identification of the static characteristics of the hydraulic damper},

journal={Tenth International Conference on Recent Advances in Structural Dynamics},

year={2010},

address={Southampton, UK},

booktitle={Tenth International Conference on Recent Advances in Structural Dynamics},

}

J.L. du Bois, N.A.J. Lieven and S. Adhikari (2009), "Localisation and Curve Veering: A Different Perspective on Modal Interactions", Proceedings of the 27th International Modal Analysis Conference, Orlando, FL.
PDF bibTeX


@inproceedings{duBois.etal2009LocalisationandCurve,

author={Jonathan Luke {du Bois} and Nick A. J. Lieven and Sondipon Adhikari},

title={Localisation and Curve Veering: A Different Perspective on Modal Interactions},

journal={Proceedings of the 27th International Modal Analysis Conference},

year={2009},

address={Orlando, FL},

booktitle={Proceedings of the 27th International Modal Analysis Conference},

}

J.L. du Bois, N.A.J. Lieven and S. Adhikari (2009), "A New Approach to Model Updating in Symmetric Structures", Proceedings of the 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Palm Springs, CA.
PDF bibTeX


@inproceedings{duBois.etal2009NewApproachto,

author={Jonathan Luke {du Bois} and Nick A. J. Lieven and Sondipon Adhikari},

title={A New Approach to Model Updating in Symmetric Structures},

journal={Proceedings of the 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference},

year={2009},

address={Palm Springs, CA},

booktitle={Proceedings of the 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference},

}

J.L. du Bois, N.A.J. Lieven and S. Adhikari (2009), "On the Role of Modal Coupling in Model Updating", Proceedings of the 27th International Modal Analysis Conference, Orlando, FL.
PDF bibTeX


@inproceedings{duBois.etal2009RoleModalCoupling,

author={Jonathan Luke {du Bois} and Nick A. J. Lieven and Sondipon Adhikari},

title={On the Role of Modal Coupling in Model Updating},

journal={Proceedings of the 27th International Modal Analysis Conference},

year={2009},

address={Orlando, FL},

booktitle={Proceedings of the 27th International Modal Analysis Conference},

}

J.L. du Bois, N.A.J. Lieven and S. Adhikari (2009), "Towards a Wireless Powering and Interrogation Strategy for Rotorcraft Health Monitoring", Proceedings of the 27th International Modal Analysis Conference, Orlando, FL.
PDF bibTeX


@inproceedings{duBois.etal2009TowardsWirelessPowering,

author={Jonathan Luke {du Bois} and Nick A. J. Lieven and Sondipon Adhikari},

title={Towards a Wireless Powering and Interrogation Strategy for Rotorcraft Health Monitoring},

journal={Proceedings of the 27th International Modal Analysis Conference},

year={2009},

address={Orlando, FL},

booktitle={Proceedings of the 27th International Modal Analysis Conference},

}

J.L. du Bois, S. Adhikari and N.A.J. Lieven (2007), "Experimental and Numerical Investigation of Mode Veering in a Stressed Structure", Proceedings of the 25th International Modal Analysis Conference, Orlando, FL, XXV, pp. 233.
PDF bibTeX


@inproceedings{duBois.etal2007ExperimentalandNumerical,

author={J. L. {du Bois} and S. Adhikari and N. A. J. Lieven},

title={Experimental and Numerical Investigation of Mode Veering in a Stressed Structure},

journal={Proceedings of the 25th International Modal Analysis Conference},

year={2007},

address={Orlando, FL},

volume={XXV},

booktitle={Proceedings of the 25th International Modal Analysis Conference},

pages={233},

}

J.L. du Bois, N.A.J. Lieven and S. Adhikari (2007), "Adaptive Passive Control of Dynamic Response Through Structural Loading", Proceedings of the 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Waikiki, HI.
PDF bibTeX


@inproceedings{duBois.etal2007AdaptivePassiveControl,

author={Jonathan Luke {du Bois} and Nick A. J. Lieven and Sondipon Adhikari},

title={Adaptive Passive Control of Dynamic Response Through Structural Loading},

journal={Proceedings of the 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference},

year={2007},

address={Waikiki, HI},

booktitle={Proceedings of the 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference},

}

PhD thesis

du Bois, Jonathan Luke, Adaptive Fuselage Response Suppression, PhD dissertation, University of Bristol, UK, 2009
PDF bibTeX abstract

Vibration suppression techniques comprise a significant proportion of contemporary rotorcraft research, with much attention devoted to active methodologies. A largely overlooked class is that of adaptive-passive techniques, where instead of introducing active components to interact with the system dynamics, quasi-static adjustments are made to passive components. Such methods have the advantages of lower power requirements and inherent stability. This thesis seeks to exploit the nonlinear effect of stress stiffening, induced by static structural loading, to produce an adaptive rotorcraft response suppression system.

The stress stiffening effect is explored using analytical models and experimental results. A significant finding is that traditional stress stiffening is accompanied by an equally important change in joint parameters as a structure is loaded. Analytical tools are proposed to incorporate this effect in simple finite element models.

Parametric studies reveal the importance of a phenomenon known as eigenvalue curve veering. Instead of crossing at an intersection, two eigenvalue loci may veer abruptly away, swapping trajectories and all their properties in the transition. An explicit experimental demonstration of the effect is documented here, and a veering index is derived to provide a definitive criterion for its quantification. The behaviour is shown to contribute valuable information to finite element model updating methods and a novel experimental identification approach is developed, permitting the use of eigenvalues instead of the less reliable eigenvectors in symmetric updating problems.

Consolidating the preceding theory, a proof-of-concept adaptive response suppression system is implemented, demonstrating a reduction in vibrations due to variable narrowband excitation frequencies.

Finite element analyses of a Lynx helicopter lead to the proposition of a stress-based adaptive tuned vibration absorber. A cable running the length of the tail boom serves as a distributed absorber mass, and changing the tension in the cable allows tuning of the multiple absorber modes. It is shown that this configuration uses only a narrow range of cable tensions to realise the cancellation of all of the critical tail boom modes.


@phdthesis{duBois2009AdaptiveFuselageResponse,

author={Jonathan Luke {du Bois}},

title={Adaptive Fuselage Response Suppression},

school={University of Bristol},

year={2009}

}

Senior Lecturer (Ass, Prof.)

Journal papers show/hide

Abstract: Automatic mode tracking for flight dynamic analysis using a spanning algorithm

Abstract: Advances in air to air refuelling

Abstract: A vision-based strategy for autonomous aerial refueling tasks

Abstract: Eigenvalue density of linear stochastic dynamical systems: A random matrix approach

Abstract: Modeling and Testing of a Semiactive Hydraulic Damper in Periodic Working Regimes

Abstract: On the Quantification of Eigenvalue Curve Veering: A Veering Index

Abstract: A method for the identification of hydraulic damper characteristics from steady velocity inputs

Abstract: Eigenvalue curve veering in stressed structures: An experimental study

Abstract: Error Analysis in Trifilar Inertia Measurements

Abstract: Epidemiology of familial sarcoidosis in the UK

Conference proceedings show/hide

Abstract: WEAK SIGNAL DETECTION BASED ON TWO DIMENSIONAL STOCHASTIC RESONANCE

Abstract: Robotic Pseudo-Dynamic Testing (RPsDT) of Contact-Impact Scenarios

Abstract: A Regenerative Approach to Energy Efficient Hydraulic Vibration Control

Abstract: A Strategy for Improving Performance in Real Time Hybrid Testing

Abstract: Bow Wave Effect in Probe and Drogue Aerial Refuelling

Abstract: Robotic Relative Motion Reproduction for Air to Air Refuelling Simulation

Abstract: Control methodologies for relative motion reproduction in a robotic hardware in the loop simulation of aerial refuelling

Abstract: Development of a relative motion facility for simulations of autonomous air to air refuelling

Abstract: A tensioned cable as an adaptive tuned vibration absorber for response suppression in rotorcraft

Abstract: Vision based closed-loop control systems for satellite rendezvous with model-in-the-loop validation and testing

Abstract: Transfer Dynamics Cancellation in Real-Time Dynamic Substructuring

Abstract: Model uncertainty in identification of the static characteristics of the hydraulic damper

Abstract: Localisation and Curve Veering: A Different Perspective on Modal Interactions

Abstract: A New Approach to Model Updating in Symmetric Structures

Abstract: On the Role of Modal Coupling in Model Updating

Abstract: Towards a Wireless Powering and Interrogation Strategy for Rotorcraft Health Monitoring

Abstract: Experimental and Numerical Investigation of Mode Veering in a Stressed Structure

Abstract: Adaptive Passive Control of Dynamic Response Through Structural Loading

PhD thesis