A semi-active temperature control vibration damping device and method based on shape memory alloy

A technology of memory alloy and vibration damping device, which is applied in the direction of building types, buildings, building components, etc., can solve the problems of damper vibration frequency detuning, narrow frequency band range, etc., and achieve the effect of good vibration damping ability

Active Publication Date: 2021-10-08
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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Problems solved by technology

The inventor found that due to the constraints of the nature of the coil spring itself, it is impossible to change its own damping and stiffness to meet the vibration reduction requirements under different excitation intensities, which will easily cause the vibration frequency of the damper to be out of tune with the vibration frequency of the structure. narrow frequency range

Method used

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  • A semi-active temperature control vibration damping device and method based on shape memory alloy
  • A semi-active temperature control vibration damping device and method based on shape memory alloy
  • A semi-active temperature control vibration damping device and method based on shape memory alloy

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Embodiment 2

[0058] This embodiment discloses a method of a semi-active temperature-controlled vibration-damping device based on a shape memory alloy described in Embodiment 1:

[0059] When the main structure vibrates under earthquake action or wind load, the mass moves smoothly on the metal ball due to inertia. If the ambient temperature T recorded by the temperature sensor 24 o If the damping device cannot achieve the ideal damping effect, the temperature in the temperature control box is adjusted by controlling the first switch and the second switch. If the second switch is closed, the current passes through the miniature refrigerator and starts cooling, and the temperature of the temperature control box gradually decreases and reaches the set temperature, so that the first spring or the second spring in the temperature control box reaches the best damping capacity. If the first switch is closed, the current will pass through the heater and start heating, and the temperature in the te...

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Abstract

The invention relates to a semi-active temperature-controlled vibration damping device and method based on a shape memory alloy, which includes a mass block that can move in a set plane, and the mass block is connected to a rigid rod through a connecting mechanism. The end of the rigid rod extends into the temperature control box and is fixed with an end plate. The end plate is fixedly connected with one end of the spring, and the other end of the spring is fixedly connected with the wall of the temperature control box. The mass block can pass through the connecting mechanism and the rigid The rod drives the end plate to move in the temperature control box. The spring is made of shape memory alloy. A temperature control device is installed in the temperature control box to control the temperature in the temperature control box. The vibration damping device of the present invention can Realize variable stiffness intelligent vibration reduction and broadband vibration reduction.

Description

technical field [0001] The invention relates to the technical field of civil engineering vibration control, in particular to a semi-active temperature control vibration reduction device and method based on a shape memory alloy. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] With the rapid development of society, various large-scale buildings have been built one after another, which have important economic and social significance, and thus require greater reliability and safety. The traditional design concept mainly improves the structural strength and rigidity through large-scale components, resulting in an increase in the quality of the building structure and excessive cost. At present, the reasonable and effective anti-seismic approach is to add damping devices to the building structure to reduce the seismic response of the structure. [0004]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04H9/021
Inventor 张思祥马悦田连博陈鹏芦灯张鸣刘俊才田利
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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