A Cylindrical Traveling Wave Spoiler Drag and Vibration Reduction Device

Abstract

The invention provides a cylindrical traveling wave spoiler anti-dragging and damping device. The device comprises a driving part, a first end cover, a second end cover and a framework. One end of the framework is connected with the first end cover, the other end of the framework is connected with the second end cover, and the second end cover is connected with the driving part. The windward side of the framework is a smooth arc surface, the leeside of the framework is provided with a first groove and a second groove, and the first groove and the second groove are symmetric. A first traveling wave cylinder belt drive mechanism is arranged in the first groove, and a second traveling wave cylinder belt drive mechanism is arranged in the second groove. The cylindrical traveling wave spoiler anti-dragging and damping device has the advantages that by controlling the speed of the first traveling wave cylinder belt drive mechanism and the speed of the second traveling wave cylinder belt drive mechanism, a series of stable vortexes are formed at the position of wave troughs, a shear layer in traditional significance is eliminated, formation of wake flow vortexes can be delayed or blocked, aerodynamic force on the surface of the structure is greatly reduced, and then the wind-induced vibration effect of the structure is effectively restrained or reduced.

Description

technical field [0001] The invention relates to a drag reduction and vibration reduction device, in particular to a drag reduction and vibration reduction device for a cylindrical traveling wave spoiler. Background technique [0002] With the advancement of construction technology and the continuous improvement of design level, modern buildings are developing in the direction of growing, towering and lightweight, such as super high-rise buildings, long-span bridges, towering structures and long-span spatial structures. These buildings have become wind-sensitive structures due to their characteristics of light weight, high flexibility, small damping, and low natural frequency. Modern building structures are complex and diverse, and behave as blunt structures for wind flow. When the wind bypasses the building, it is inevitably accompanied by flow separation, shear layer and vortex shedding, resulting in fluid-solid coupling between the wind field and the building. Vibration i...

AI Technical Summary

Problems solved by technology

The amplitude of wind and rain vibration is usually large, and the amplitude of vortex induced vibration is usually small, but it occurs frequently, which is not good for the fatigue life of stay cables

[0004] It can be seen that the cylindrical structure is a common structural form in engineering, and the flow-induced cylindrical vibration is a fluid-solid coupling problem with a wide range of engineering application backgrounds, which often leads to a reduction in the service life of the structure, and even damages it, endangering the safety of the structure

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