公开(公告)号：US11293415B2

公开(公告)日：2022-04-05

申请号：US17297872

申请日：2020-07-31

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xing Fu ,  Hongnan Li ,  Gang Li ,  Zhiqian Dong ,  Zhikai Xu ,  Xingheng Zhang

IPC: F03G7/06

Abstract: The present invention belongs to the technical field of structural vibration control, and provides a composite axial energy consumption device based on piezoelectricity and shape memory alloy, comprising a screw, steel pipes, stiffening ribs, steel sheets, bolt-nuts, piezoceramics, screw caps and SMA wire bundles. The mechanical energy of the structure under pressure is converted into the electric energy of the piezoceramics and then the electric energy is converted into heat energy, so that energy consumption efficiency is high and mechanical performance is good. The SMA wire bundles have large tensile bearing capacity, shape memory effect and good corrosion resistance and fatigue resistance. The number of the segments and the specifications of the piezoceramics and the SMA wire bundles can be adjusted according to the actual needs, so that the structure can be adjusted according to the size of an axial force and specific stress conditions.

公开(公告)号：US11754140B2

公开(公告)日：2023-09-12

申请号：US16967695

申请日：2019-09-20

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xing Fu ,  Hongnan Li ,  Gang Li ,  Xingheng Zhang ,  Zhiqian Dong ,  Wenlong Du

IPC: E04H9/02 ,  F16F15/03

CPC classification number: F16F15/035 ,  E04H9/0237 ,  F16F2222/06 ,  F16F2236/10

Abstract: The present invention discloses a coupling beam eddy current damper with shear displacement amplification. The coupling beam eddy current damper with shear displacement amplification comprises a rigid rod, rotating shafts, a pin column, pins, levers, screws, thread sleeves, copper sheets, permanent magnet components, a steel structural component, balls, ball supports and an outer shell. When vibration occurs, coupling beams on both sides of the damper are relatively vertically displaced; at this moment, two levers move up and down relative to the rigid rod; the movement causes the screws and the copper sheets to rotate; the copper sheets rotate in a magnetic field, then induced electromotive force will generates inside the magnetic field, thereby generating eddy current in the copper sheets. The eddy current effect will produce a damping force that impedes the rotation of the copper sheets.