Experimental Study and Application of Metallic Yielding–friction Damper

Abstract

In this paper, a new idea for designing the metallic yielding-friction damper (MYFD) is presented based on the principle that the metallic plate can be used for yielding and can be the friction component of the passive energy dissipation device (PEDD). This type of damper is so-called the MYFD, because it consists of yielding part and friction part. Phased energy dissipation is realized throughout the metallic yielding plate and friction plate combination where friction behavior is prior to yielding behavior. The quasi-static test with two small-scale MYFDs is carried out. Then, it is applied in an actual reinforced concrete building. The design method and fitting process of the MYFDs are introduced. In order to compare seismic responses of the building with and without the dampers, a dynamic analysis of the building under earthquakes is performed. The results show that the MYFD presented here possess good ability of seismic energy dissipation.

Displacement-based seismic design for buildings installed hysteretic dampers with hardening post-yielding stiffness

“…When the maximum displacement Δ max of the damper is greater than Δ y,2 in Point C, as with the SAFE damper (Lee et al, 2016) and the metallic yielding-friction damper (Li and Li, 2013), which could be described as O-A-B-C-D, hysteretic energy E d can be written as…”

“…HDHPS, as discussed herein, refers to a type of damper with a hysteresis curve of a certain raised stiffness after yielding, and it could improve the structural deformation concentration caused by a sudden drop in post-yielding stiffness to help compensate for the reduced stiffness of a story in structures to realize multiphased seismic performance. The hysteresis curves of this type of damper are interesting because of the mechanism of hardening behavior; hysteresis curves for three representative dampers are shown in Figure 1 ( Lee et al, 2016Lee et al, , 2017Li and Li, 2013).…”

“…The hardening behavior of the above devices is realized through geometric deformation or the variational arm of the external force; however, some energy dissipation devices are connected in parallel or in series by two kinds of energy dissipation technologies to harden the stiffness after the yield. Li and Li (2013) developed a metallic yielding-friction damper with multiphased energy dissipation capabilities. Its friction part slides relatively to each other to dissipate energy under small and moderate earthquakes, and the metallic plates dissipate input energy via plastic deformation during strong earthquakes.…”

Vibration Control of a High-Rise Slender Structure with a Spring Pendulum Pounding Tuned Mass Damper

“…When the primary structure is forced into motion, the TMD can generate an inertial force to reduce the structural vibration. In recent years, scholars have conducted considerable research on the TMD and proposed many new type TMD devices, such as the annular TMD [14], pendulum TMD [15,16], frictional TMD [17], viscoelastic TMD [18,19].…”

Sensitivity Analysis of Behavior of Simple Trapezoidal Steel Plates to Introduce a New Yielding Damper

“…After experimental studies and nonlinear analysis, they proved that the use of parallel steel plates as interchangeable yielding dampers can provide desirable results in the behavior of the structure during an earthquake. In 2013, Li et al [19] investigated the use of parallel yielding plates in series in the upper part of Chevron braces in reinforced concrete frames. They also installed and tested a prototype of this type of system in a reinforced concrete building.…”