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

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]...

AI Technical Summary

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

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