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    Testing of Lead Extrusion Damping Devices Undergoing Representative Earthquake Velocities (2013)

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    Type of Content
    Conference Contributions - Other
    UC Permalink
    http://hdl.handle.net/10092/9089
    Publisher
    University of Canterbury. Mechanical Engineering
    Collections
    • Engineering: Conference Contributions [2131]
    Authors
    Rodgers, G.W., Chase, J.G., Heaton, D., Cleeve, L.show all
    Abstract

    In recent years, significant research has been undertaken into the development of lead-extrusion damping technology. The high force-to-volume (HF2V) devices developed at the University of Canterbury have been the subject of much of this research. However, while these devices have undergone a limited range of velocity testing, limitations in test equipment has meant that they have never been tested at representative earthquake velocities. Such testing is important as the peak resistive force provided by the dampers under large velocity spikes is an important design input that must be known for structural applications. This manuscript presents the high-speed testing of HF2V devices with quasi-static force capacities of 250-300kN. These devices have been subjected to peak input velocities of approximately 200mm/s, producing peak resistive forces of approximately 350kN. The devices show stable hysteretic performance, with slight force reduction during high-speed testing due to heat build-up and softening of the lead working material. This force reduction is recovered following cyclic loading as heat is dissipated and the lead hardens again. The devices are shown to be only weakly velocity dependent, an advantage in that they do not deliver large forces to the connecting elements and surrounding structure if larger than expected response velocities occur. This high-speed testing is an important step towards uptake as it provides important information to designers.

    Citation
    Rodgers, G.W., Chase, J.G., Heaton, D., Cleeve, L. (2013) Testing of Lead Extrusion Damping Devices Undergoing Representative Earthquake Velocities. Wellington, New Zealand: New Zealand Society of Earthquake Engineers Annual Conference (NZSEE 2013), 26-28 Apr 2013. 8pp.
    This citation is automatically generated and may be unreliable. Use as a guide only.
    ANZSRC Fields of Research
    40 - Engineering::4005 - Civil engineering::400506 - Earthquake engineering
    40 - Engineering::4005 - Civil engineering::400504 - Construction engineering
    Rights
    https://hdl.handle.net/10092/17651
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