公开(公告)号：US20200309225A1

公开(公告)日：2020-10-01

申请号：US16765578

申请日：2018-08-22

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Shuli FAN ,  Linsheng HUO

IPC: F16F7/104 ,  F16F7/00 ,  E04B1/98

Abstract: A built-in spatial hammer type impact damper placed in steel tube structures is provided. A spherical mass oscillator is fixed in the center of an annular sheet housing through springs on the oscillator. Many rigid rods are fixed on the spherical mass oscillator. The annular housing, spherical mass oscillator and springs form a tuned mass damper to offset the vibration of a steel pipe structure caused by external excitation. In addition, viscoelastic energy absorbing caps are settled on the top of the rigid rods and will collide with the sheet housing when host structure vibrating. Multiple springs and rigid rods in an annular plane can reduce the level of vibration in multiple directions. Many dampers are connected through connecting rods to form a spatial hammer type damper which is placed in a circular steel pipe. Vibration reduction efficiency can be increased and the space occupied by dampers can be reduced.