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| Evaluation of the dissipated energy of the ring-brake energy dissipater using the static tensile tests and the dynamic FEM simulation |
Wang Min[1] ; Shi Shao-qing[1] ; Yang You-kui[2]
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| [1]The Dept. of Civil Eng., Logistical Engineering University, Chongqing401311, China;[2]) Geobrugg ChengDu CO., LTD, ChengDu 611731, China |
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Abstract Abstract: The ring-brake energy dissipater of the passive system consists of the tubular steel loops and the aluminum compression sleeves, and the cables drilled through the tubular steel loops are connected to the anchor rope and the support rope. The ring-brake energy dissipater used in the system is based on their great slip resistance capacity which can dissipate the kinetic energy and alleviates the impact load. Based on the effect of the ring-brake energy dissipater in the passive system, the static tensile tests and the dynamic FEM simulation are carried out. The numerical results with the ring-brake energy dissipater at the low speed load show the correlation to the static tensile tests. The slip resistance is increased and the energy dissipation performance is improved with the speed load increasing. In addition, the sliding force and the dissipated energy of the ring-brake energy dissipater which are influenced by the length of the aluminum compression sleeves are studied. The results show that: the energy dissipation capacity of the ring-brake energy dissipater begins to increase more singificantly, then no significant increase lately. The sliding force first decreases and then increases with the sleeve length increased. When the aluminum compression sleeves is in the context of appropriate length, the results of the ideal efficiency energy dissipation obtained by the dynamic simulation is closed to the static tests.
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Received: 07 June 2010
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2011, Vol. 30 
