Research on Dissipation and Fatigue Capacity of Nonstiffener Shear Panel Dampers

Abstract

Passive energy dissipation control system can effectively control structure response under seismic action. As a form of passive energy dissipation control, yielding steel shear panel dampers can dissipate energy of the ground motion very well with the plastic deformation. By monotonic cyclic loading, hysteretic performance of the 15 mm thick core-board nonstiffener shear panel damper is tested, and the test shows that the damper has a superior hysteretic performance. Using finite element analysis software ABAQUS, and taking height to thickness ratio of the core-board as variable, the qualitative analysis on the damper is carried out, and results show that the critical height to thickness ratio of shear panel damper is between 30 and 35. Three groups of 15 mm thick core-board nonstiffener shear panel dampers are tested by constant amplitude cyclic loading under different amplitudes; the results show that the fatigue performance is fine and the damper is a good energy dissipation device.

Hysteretic Behaviour Simulation of Low-Yield Steels Under Mechanical Cyclic Loads

“…Likewise, when a structure is subjected to seismic conditions, the energy dissipation elements undergo plastic deformations, where, their magnitude will depend mainly on the number of repeated cycles during the event, which will eventually lead to fatigue of the material [12], [13]. The potential of the LYP steels has motivated several studies to dissipate energy, e.g., in [14] the authors study experimentally and with the Finite Element Method (FEM), fatigue behaviour and hysteresis in the Nonstiffener Shear Panel Dampers manufactured in steel LYP100, the authors report a good performance due to fatigue in monotonic and increasing load cycles. Metal shock absorbers made of steel LYP100, LYP160 and LYP225 are studied in [15], the results show a behaviour of plasticity and energy dissipation by hysteresis.…”