Composite hyperbolic corrugated sandwich structure for inhibiting vibration of lubricating oil tank of aero-engine and application of composite hyperbolic corrugated sandwich structure

Abstract

The invention belongs to the technical field of vibration suppression, and particularly relates to a composite hyperbolic corrugated sandwich structure for suppressing vibration of a lubricating oil tank of an aero-engine and application of the composite hyperbolic corrugated sandwich structure. The technical scheme is as follows: the magnetorheological damper comprises two panels, two corrugated plates and a plurality of magnetorheological cores, wherein the panels and the corrugated plates are made of composite materials; the two corrugated plates are buckled and bonded together, a plurality of mounting holes are formed between the two corrugated plates, and the magnetorheological cores are placed in the mounting holes; the two panels are arranged on the outer sides of the two corrugated plates respectively, and the panels and the corrugated plates are bonded together by filling polyester foam; the magnetorheological core comprises a core rod, metal caps, copper coils and a heat dissipation film, magnetorheological fluid is filled in the core rod, the metal caps are respectively arranged at two ends of the core rod, and a plurality of groups of copper coils are arranged outside the core rod in a manner of winding a group of copper coils and then covering a layer of heat dissipation film. By actively controlling the damping performance of the magneto-rheological interlayer, the vibration suppression effect on the lubricating oil tank mounting structure is achieved.

Description

technical field [0001] The invention belongs to the technical field of vibration suppression, and in particular relates to a composite hyperbolic corrugated sandwich structure for suppressing vibration of an aero-engine lubricating oil tank and its application. Background technique [0002] In recent years, with the continuous pursuit of high thrust-to-weight ratio and low fuel consumption rate of high-performance aero-engines, thin-walled structures have been widely used, which has led to the problems of excessive vibration and fatigue failure of many components. As the most important part of aero-engine, the lubricating oil system mainly plays the role of lubricating bearings, reducing friction and cooling accessories. The lubricating oil tank often produces severe vibration or even structural damage due to the vibration of the casing and the pressure pulsation of the internal oil. The lubricating oil tank is an important part of the aero-engine lubricating oil system. Th...

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Problems solved by technology

This structure supplies energy to the magneto-rheological core layer through the electric energy collected by the inner shell, so as to play a damping and buffering role. The effect is not as good as the multi-coil winding magnetorheological core, and this structure does not solve the heat dissipation problem of the magnetorheological copper coil, which affects the vibration reduction performance

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