Spiral Pulley Negative Stiffness Mechanism for Morphing Aircraft Actuation

Jiaying Zhang, Alexander Shaw, Mohammadreza Amoozgar, Michael I. Friswell, Benjamin K. S. Woods

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The energy balancing concept seeks to reduce actuation requirements for a morphing structure by strategically locating negative stiffness devices to tailor the required deployment forces and moments. One such device is the spiral pulley negative stiffness mechanism. This uses a cable connected with a pre-tension spring to covert decreasing spring force into increasing balanced
torque. The kinematics of the spiral pulley are firstly developed
and its geometry is then optimised by employing an energy conversion efficiency function. The performance of the optimised spiral pulley is then evaluated through the net torque, the total required energy and energy conversion efficiency. An experiment demonstrates the negative stiffness property of the mechanism and compares its characteristics with the analytical result.
Exploiting the negative stiffness mechanism has a significant interest in not only the field of morphing aircraft but many other power reduction applications.an increasing output torque. The kinematics of the spiral pulley are firstly developed and its geometry is then optimised by employing an energy conversion efficiency function. The performance of the optimised spiral pulley
is then evaluated through the net torque, the total required energy
and energy conversion efficiency. An experiment demonstrates the negative stiffness property of the mechanism and compares its characteristics with the analytical result. Exploiting the negative stiffness mechanism has a significant interest in not only the field of morphing aircraft but also many other energy and power reduction applications.
Original languageEnglish
Title of host publicationASME 2018 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference
PublisherAmerican Society of Mechanical Engineers(ASME)
Number of pages10
Volume5B
ISBN (Print)9780791851814
DOIs
Publication statusPublished - 2 Nov 2018
Externally publishedYes
EventASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - Quebec City Convention Center, Quebec, Canada
Duration: 26 Aug 201829 Aug 2018
https://archive.asme.org/events/idetccie2018

Conference

ConferenceASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Abbreviated titleIDETC/CIE
CountryCanada
CityQuebec
Period26/08/1829/08/18
Internet address

Fingerprint

Pulleys
Aircraft
Stiffness
Energy conversion
Conversion efficiency
Torque
Kinematics
Geometry
Cables
Experiments

Cite this

Zhang, J., Shaw, A., Amoozgar, M., Friswell, M. I., & Woods, B. K. S. (2018). Spiral Pulley Negative Stiffness Mechanism for Morphing Aircraft Actuation. In ASME 2018 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference (Vol. 5B). American Society of Mechanical Engineers(ASME). https://doi.org/10.1115/DETC2018-85640
Zhang, Jiaying ; Shaw, Alexander ; Amoozgar, Mohammadreza ; Friswell, Michael I. ; Woods, Benjamin K. S. / Spiral Pulley Negative Stiffness Mechanism for Morphing Aircraft Actuation. ASME 2018 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference. Vol. 5B American Society of Mechanical Engineers(ASME), 2018.
@inproceedings{29369d618fa54b33af5ed40d412dac2e,
title = "Spiral Pulley Negative Stiffness Mechanism for Morphing Aircraft Actuation",
abstract = "The energy balancing concept seeks to reduce actuation requirements for a morphing structure by strategically locating negative stiffness devices to tailor the required deployment forces and moments. One such device is the spiral pulley negative stiffness mechanism. This uses a cable connected with a pre-tension spring to covert decreasing spring force into increasing balancedtorque. The kinematics of the spiral pulley are firstly developedand its geometry is then optimised by employing an energy conversion efficiency function. The performance of the optimised spiral pulley is then evaluated through the net torque, the total required energy and energy conversion efficiency. An experiment demonstrates the negative stiffness property of the mechanism and compares its characteristics with the analytical result.Exploiting the negative stiffness mechanism has a significant interest in not only the field of morphing aircraft but many other power reduction applications.an increasing output torque. The kinematics of the spiral pulley are firstly developed and its geometry is then optimised by employing an energy conversion efficiency function. The performance of the optimised spiral pulleyis then evaluated through the net torque, the total required energyand energy conversion efficiency. An experiment demonstrates the negative stiffness property of the mechanism and compares its characteristics with the analytical result. Exploiting the negative stiffness mechanism has a significant interest in not only the field of morphing aircraft but also many other energy and power reduction applications.",
author = "Jiaying Zhang and Alexander Shaw and Mohammadreza Amoozgar and Friswell, {Michael I.} and Woods, {Benjamin K. S.}",
year = "2018",
month = "11",
day = "2",
doi = "10.1115/DETC2018-85640",
language = "English",
isbn = "9780791851814",
volume = "5B",
booktitle = "ASME 2018 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference",
publisher = "American Society of Mechanical Engineers(ASME)",
address = "United States",

}

Zhang, J, Shaw, A, Amoozgar, M, Friswell, MI & Woods, BKS 2018, Spiral Pulley Negative Stiffness Mechanism for Morphing Aircraft Actuation. in ASME 2018 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference. vol. 5B, American Society of Mechanical Engineers(ASME), ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Quebec, Canada, 26/08/18. https://doi.org/10.1115/DETC2018-85640

Spiral Pulley Negative Stiffness Mechanism for Morphing Aircraft Actuation. / Zhang, Jiaying; Shaw, Alexander; Amoozgar, Mohammadreza; Friswell, Michael I.; Woods, Benjamin K. S.

ASME 2018 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference. Vol. 5B American Society of Mechanical Engineers(ASME), 2018.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Spiral Pulley Negative Stiffness Mechanism for Morphing Aircraft Actuation

AU - Zhang, Jiaying

AU - Shaw, Alexander

AU - Amoozgar, Mohammadreza

AU - Friswell, Michael I.

AU - Woods, Benjamin K. S.

PY - 2018/11/2

Y1 - 2018/11/2

N2 - The energy balancing concept seeks to reduce actuation requirements for a morphing structure by strategically locating negative stiffness devices to tailor the required deployment forces and moments. One such device is the spiral pulley negative stiffness mechanism. This uses a cable connected with a pre-tension spring to covert decreasing spring force into increasing balancedtorque. The kinematics of the spiral pulley are firstly developedand its geometry is then optimised by employing an energy conversion efficiency function. The performance of the optimised spiral pulley is then evaluated through the net torque, the total required energy and energy conversion efficiency. An experiment demonstrates the negative stiffness property of the mechanism and compares its characteristics with the analytical result.Exploiting the negative stiffness mechanism has a significant interest in not only the field of morphing aircraft but many other power reduction applications.an increasing output torque. The kinematics of the spiral pulley are firstly developed and its geometry is then optimised by employing an energy conversion efficiency function. The performance of the optimised spiral pulleyis then evaluated through the net torque, the total required energyand energy conversion efficiency. An experiment demonstrates the negative stiffness property of the mechanism and compares its characteristics with the analytical result. Exploiting the negative stiffness mechanism has a significant interest in not only the field of morphing aircraft but also many other energy and power reduction applications.

AB - The energy balancing concept seeks to reduce actuation requirements for a morphing structure by strategically locating negative stiffness devices to tailor the required deployment forces and moments. One such device is the spiral pulley negative stiffness mechanism. This uses a cable connected with a pre-tension spring to covert decreasing spring force into increasing balancedtorque. The kinematics of the spiral pulley are firstly developedand its geometry is then optimised by employing an energy conversion efficiency function. The performance of the optimised spiral pulley is then evaluated through the net torque, the total required energy and energy conversion efficiency. An experiment demonstrates the negative stiffness property of the mechanism and compares its characteristics with the analytical result.Exploiting the negative stiffness mechanism has a significant interest in not only the field of morphing aircraft but many other power reduction applications.an increasing output torque. The kinematics of the spiral pulley are firstly developed and its geometry is then optimised by employing an energy conversion efficiency function. The performance of the optimised spiral pulleyis then evaluated through the net torque, the total required energyand energy conversion efficiency. An experiment demonstrates the negative stiffness property of the mechanism and compares its characteristics with the analytical result. Exploiting the negative stiffness mechanism has a significant interest in not only the field of morphing aircraft but also many other energy and power reduction applications.

U2 - 10.1115/DETC2018-85640

DO - 10.1115/DETC2018-85640

M3 - Conference contribution

SN - 9780791851814

VL - 5B

BT - ASME 2018 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference

PB - American Society of Mechanical Engineers(ASME)

ER -

Zhang J, Shaw A, Amoozgar M, Friswell MI, Woods BKS. Spiral Pulley Negative Stiffness Mechanism for Morphing Aircraft Actuation. In ASME 2018 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference. Vol. 5B. American Society of Mechanical Engineers(ASME). 2018 https://doi.org/10.1115/DETC2018-85640