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Development and characterization of a multi-layer magnetorheological elastomer isolator based on a Halbach array

Journal Article


Abstract


  • Most existing vibration isolators and dampers based on magnetorheological (MR) materials need

    electrical power to feed magnetic coils to stimulate the MR material, so if there is a loss of

    power, such as during a strong earthquake or system failure, they are unable to protect the

    structure. This paper outlines the design and test of a controllable multilayered

    magnetorheological elastomer (MRE) isolator based on a circular dipolar Halbach array; which

    is a set of magnets that generates a strong and uniform magnetic field. Combining an MRE

    layered isolator system with the Halbach array allows for constant vibration isolation with very

    low power consumption, where the power generated is only used to adjust the Halbach position.

    When this system was tested it successfully altered the lateral stiffness and damping force by

    81.13% and 148.72%, respectively. This paper also includes an extended analysis of the

    magnetic field generated by the circular dipolar Halbach array and a discussion of the

    improvements that may potentially improve the range of magnetic fields generated.

Publication Date


  • 2016

Citation


  • Przybylski, M., Sun, S. & Li, W. (2016). Development and characterization of a multi-layer magnetorheological elastomer isolator based on a Halbach array. Smart Materials and Structures, 25 (10), 105015-1-105015-10.

Scopus Eid


  • 2-s2.0-84989867147

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/6288

Start Page


  • 105015-1

End Page


  • 105015-10

Volume


  • 25

Issue


  • 10

Abstract


  • Most existing vibration isolators and dampers based on magnetorheological (MR) materials need

    electrical power to feed magnetic coils to stimulate the MR material, so if there is a loss of

    power, such as during a strong earthquake or system failure, they are unable to protect the

    structure. This paper outlines the design and test of a controllable multilayered

    magnetorheological elastomer (MRE) isolator based on a circular dipolar Halbach array; which

    is a set of magnets that generates a strong and uniform magnetic field. Combining an MRE

    layered isolator system with the Halbach array allows for constant vibration isolation with very

    low power consumption, where the power generated is only used to adjust the Halbach position.

    When this system was tested it successfully altered the lateral stiffness and damping force by

    81.13% and 148.72%, respectively. This paper also includes an extended analysis of the

    magnetic field generated by the circular dipolar Halbach array and a discussion of the

    improvements that may potentially improve the range of magnetic fields generated.

Publication Date


  • 2016

Citation


  • Przybylski, M., Sun, S. & Li, W. (2016). Development and characterization of a multi-layer magnetorheological elastomer isolator based on a Halbach array. Smart Materials and Structures, 25 (10), 105015-1-105015-10.

Scopus Eid


  • 2-s2.0-84989867147

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/6288

Start Page


  • 105015-1

End Page


  • 105015-10

Volume


  • 25

Issue


  • 10