memory alloy damper

Abstract

The invention discloses a memory alloy damper, which includes a memory alloy spring assembly, a casing, a limit bar, a battery, a guide rod, a partition, a displacement meter, and a circuit; the memory alloy spring assembly includes a memory alloy spring and a pull rod, and the memory alloy assembly It is connected with the partition by bolts, the limit bar is connected with the casing by bolts, and the displacement gauge is fixed on the inner wall of the casing by a strong magnet. When the guide rod moves left and right due to the vibration of the cable, it will drive one side of the partition to move, thereby driving The memory alloy spring is stretched. When the displacement meter detects a certain degree of displacement, the current will pass through the memory alloy spring, causing it to be heated to generate a large recovery stress and reduce the amplitude of the cable. When the vibration of the cable slows down, the circuit will disconnect. The invention can effectively control the vibration of the cable, and the working mode is highly efficient and energy-saving, which not only reduces the cost of controlling the vibration, but also effectively improves the safety of the structure.

Description

technical field [0001] The invention provides a memory alloy damper, which belongs to the scope of structural vibration control. Background technique [0002] Vibration control in the field of civil engineering can generally be divided into active control and passive control according to the presence or absence of external energy input, as well as semi-active control and hybrid control formed by the combination of these two control methods. Commonly used active control methods include: actively tuned mass damper, active cable technology, pulse control, etc. Passive control methods mainly include: base isolation control, metal yield damper, friction damper and shock absorber for vibration reduction, etc. [0003] The passive control method is to install shock-absorbing and energy-consuming equipment at a special position of the structure to suppress the deformation and movement of the structure under the action of external force. It has the characteristics of simple structur...

AI Technical Summary

Problems solved by technology

[0003] The passive control method is to install shock-absorbing and energy-consuming equipment at a special position of the structure to suppress the deformation and movement of the structure under the action of external force. It has the characteristics of simple structure, no need for external energy, long life, convenient maintenance, and low cost. It is widely used in structural engineering It has been widely used, such as viscous damper and metal yield damper. The main structure of viscous damper includes cylinder, viscous liquid, piston, piston rod, damping material chamber, sealing sleeve, sealing ring, etc. This type of damper has high requirements on the sealing of the instrument, and there are problems such as liquid leakage that affect the reliability of the instrument

However, metal yield dampers have problems such as aging of metal materials and plastic deformation due to fatigue, which is not conducive to the long-term work of the damper.

Images