Abstract：The author figures out a new type of assembled Biconical Energy Dissipator, called BED for short. Carrying on the FEM analysis for 18 pieces of BEDCs(Biconical Energy Dissipated Cell) and 3 pieces of BEDs, the author gains the characteristics of the BEDs, including the hysteresis performances, stress distribution forms and practical assemblies. The analysis results turn out that if the height of the BEDC is determined, the initial stiffness and the yielding displacement of the BEDC are determined by the height of the bigger cone; the yielding displacement can be set less than 1mm; the energy dissipation index can reach 2.6; the hysteresis performances of different patterns of the assembled BEDs depend on the adopted BEDCs and the stiffnesses of the top and bottom connecting plates, in case of the connecting plates have enough stiffness, the relative hysteresis performances parameters of the BED can be gained by superposition of the relevant parameters of the adopted BEDCs, such as the initial stiffness, the yielding displacement and the coefficient of energy dissipation.
2012, Vol. 31 
