SMA Stranded Wire-liquid Viscous Damper Design And Energy Dissipation Research

Building structural vibration control technique refers to using dissipative dampingdevices which installed in the appropriate position of the building to reduce or inhibitthe adverse vibration response of structures that caused by the external load. Throughthe analysis research to the conventional type of liquid viscous damper in this paper, theauthor design a new type of hybrid dissipative damping device—SMA strandedwire-liquid viscous damper, which can back to its original position after vibration, andcarry on research to its performance of energy dissipation and vibration reduction.This paper firstly summarized the building structural vibration control techniqueresearch and engineering application status at home and abroad, combined with thecurrent research result and application of the shape memory alloy (SMA), designed thenew type of SMA stranded wire-liquid viscous damper on the basis of the analysisresearch to the dissipative damping mechanism of the conventional liquid viscousdamper. Then did the numerical analysis to the capability of energy dissipation of thisnew kind of damper with the aid of related test data, and finally carried on the timecourse of the finite element simulation analysis to a high-level frame structure whichequipped with conventional type liquid viscous dampers and SMA stranded wire-liquidviscous dampers separately under the action of seismic wave excitation. The analysisresults show that:(1) Compared to the ordinary liquid viscous damper, under the same conditions, thenew type of SMA stranded wire-liquid viscous damper has better energy dissipationcapacity.(2) The SMA stranding energy dissipation element to join in, turn the traditionalliquid viscous damper into viscoelastic damper, which increased the stiffness under thecondition of without lowering the energy dissipation capacity, and increase a dissipativedamping line.(3) The dissipative damping effect of dissipative damping structure system installedwith SMA stranded wire-liquid viscous damper is better than that installed with theconventional type liquid viscous damper. (4) By the working principle of the new SMA stranded wire-liquid viscous damperknow that it has the ability to return to the initial position.