本文开发了一种两相电弧非线性能量吸收器（2PA NES），用于缓解基础

This paper developed a two-phase non-linear arc energy absorber (2PA NES), a base-isolated structure to ease the displacement. 2PA NES mass damper is a non-linear, non-linear restoring force can be generated by moving the auxiliary mass in orbit. The track is divided into two stages, can provide a soft recovery force 2PA NES. On the basis of the isolation structure, 2PA NES as the roof of a building at the top is attached, without limitation the position and space. 2PA NES can be precisely adjusted to match the hysteretic behavior of the isolation structure. First, the equations of motion derived resilience 2PA NES and 2PA NES isolation system. Subsequently, the design principle of 2PA NES and apply it to eight base isolation structure. Then, in a series of pulse-type earthquake excitation studied 2PA NES shock absorbing capacity by calculation. The results show that, 2PA NES substantially more effective in reducing the displacement ratio similar tuned mass damper (TMD). Further, 2PA NES stroke smaller than the TMD, and supplementary 2PA NES little effect on the response of the superstructure. 2PA NES has a very small mounting limits and high control effect, provides a promising solution to reduce the displacement of the base isolation structure. 2PA NES smaller than the stroke of the TMD, and small 2PA NES supplement on the response of the superstructure. 2PA NES has a very small mounting limits and high control effect, provides a promising solution to reduce the displacement of the base isolation structure. 2PA NES smaller than the stroke of the TMD, and small 2PA NES supplement on the response of the superstructure. 2PA NES has a very small mounting limits and high control effect, provides a promising solution to reduce the displacement of the base isolation structure.

In this paper, a two-phase arc nonlinear energy absorber (2PA NES) has been developed to relieve displacement in the underlying isolation structure. 2PA NES is a nonlinear mass damper that produces nonlinear resilience by moving the auxiliary mass on the orbit. The track is divided into two stages and provides gentle resilience for the 2PA NES. In a basicisolated structure, 2PA NES is attached to the top floor as the roof of a building, regardless of location and space. 2PA NES can be precisely adjusted to match the lag behavior of the isolation structure. First, the recovery force of 2PA NES and the motion equation of 2PA NES isolation system are derived. Then, the design principle of 2PA NES is proposed and applied to the eight-layer basic isolation structure. Then, the damping capacity of 2PA NES was studied by calculation under a series of pulsed seismic excitation. The results show that 2PA NES is more effective than the tuned mass damper (TMD) of its kind in reducing the basic displacement. In addition, the stroke of the 2PA NES is smaller than that of the TMD, and the supplement of the 2PA NES has little effect on the response of the upper structure. 2PA NES offers a promising solution for reducing displacement in the underlying isolation structure with minimal installation restrictions and high control effects. The stroke of 2PA NES is smaller than that of the TMD, while the supplement of 2PA NES has little impact on the response of the upper structure. 2PA NES offers a promising solution for reducing displacement in the underlying isolation structure with minimal installation restrictions and high control effects. The stroke of 2PA NES is smaller than that of the TMD, while the supplement of 2PA NES has little impact on the response of the upper structure. 2PA NES offers a promising solution for reducing displacement in the underlying isolation structure with minimal installation restrictions and high control effects.

In this paper, a two-phase arc nonlinear energy absorber (2panes) is developed to alleviate the displacement in the base isolated structure. 2panes is a kind of nonlinear mass damper, which can generate nonlinear restoring force through the auxiliary mass moving on the track. The track is divided into two phases to provide soft resilience for 2PA nes. In the structure with isolated foundation, 2PA NES is attached to the top floor as the roof of the building, not limited by location and space. 2panes can be precisely adjusted to match the lag behavior of isolated structures. Firstly, the restoring force of 2panes and the motion equation of 2panes isolation system are derived. Then, the design principle of 2panes is put forward and applied to the eight layer foundation isolation structure. Then, the shock absorption capacity of 2panes is studied by calculation under a series of impulsive seismic excitation. The results show that 2panes is more effective than TMD in reducing the basic displacement. In addition, the stroke of 2panes is smaller than that of TMD, and the supplement of 2panes has little effect on the response of superstructure. 2panes has a very small installation limit and a high control effect, which provides a promising solution for reducing the displacement in the isolated structure. The stroke of 2panes is smaller than that of TMD, while the supplement of 2panes has little effect on the response of superstructure. 2panes has a very small installation limit and a high control effect, which provides a promising solution for reducing the displacement in the isolated structure. The stroke of 2panes is smaller than that of TMD, while the supplement of 2panes has little effect on the response of superstructure. 2panes has a very small installation limit and a high control effect, which provides a promising solution for reducing the displacement in the isolated structure.<br>