Evaluation of Demo 1C composite flywheel rotor burst test and containment design

Kass,; McKeever, J.W.; Akerman,; Goranson, P.; Litherland, P.S.; O`Kain, D.

doi:10.2172/656848

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…In theory, steel rotors are susceptible to a tri-hub burst where the rotor fails catastrophically by breaking into three pieces [12]. In reality, steel rotor failures are far more complex [13].…”

Section: The Nature Of Flywheel Failurementioning

confidence: 99%

Recommended Practices for the Safe Design and Operation of Flywheels

Bender

2015

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Section: The Nature Of Flywheel Failurementioning

confidence: 99%

Recommended Practices for the Safe Design and Operation of Flywheels

Bender

2015

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“…In contrast, little data has been published about failure modes and containment of composite flywheels. However, it is known that (1) composite rotor failure modes are very different from the behavior of metallic wheels and (2) catastrophic burst failures with very rapid energy release during overspeed of composite flywheel rotors have been demonstrated during failure testing [2,3,4,5]. Based on the potential for catastrophic failure and the lack of long term operating experience with composite flywheels, it is prudent to incorporate containment structures to mitigate the effects of a failure in near-term vehicular Flywheel Energy Storage Systems (FESS).…”

Section: Introductionmentioning

confidence: 99%

Lightweight containment for high-energy rotating machines

et al. 2003

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Abstract--The University of Texas Center for Electromechanics (UT-CEM), as a member of the Defense Advanced Research Projects Agency (DARPA) Flywheel Safety and Containment program, has developed a lightweight containment system for high-speed, composite rotors. The containment device, consisting of a rotatable, composite structure has been demonstrated to contain the high-energy release from a rotor burst event and is applicable to composite rotors for pulsed power applications. UT-CEM recently conducted a burst spin test of a composite flywheel inside this composite containment device at Test Devices Incorporated (TDI) of Hudson MA. The most important aspect of this design is that the free-floating containment structure dissipates the major loads (radial, torque, and axial) encountered during the burst event, greatly reducing the loads that pass through the stator structure to its attachments. The design results in significant system-level weight savings for the entire rotating machine when compared to a system with an all-metallic containment. Of equal interest to the containment design, the experimental design and instrumentation was very challenging and resulted in significant lessons learned. This paper describes the containment system design, rotor burst test setup, instrumentation for measuring loads induced by the burst event, and a detailed explanation of the successful containment test results and conclusions.

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An Assessment of Flywheel High Power Energy Storage Technology for Hybrid Vehicles

Hansen¹,

O`Kain

2012

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Evaluation of Demo 1C composite flywheel rotor burst test and containment design

Abstract: Approved for public release; distribution is unlimited. MASTEe Prepared byOak Ridge National Laboratory Oak Ridge, Tennessee 37831-8088 managed by LOCKHEED MARTIN ENERGY RESEARCH COW.

Cited by 4 publications

References 2 publications

Recommended Practices for the Safe Design and Operation of Flywheels

Recommended Practices for the Safe Design and Operation of Flywheels

Lightweight containment for high-energy rotating machines

An Assessment of Flywheel High Power Energy Storage Technology for Hybrid Vehicles

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