Self-powered and vibration-sensing magnetorheological interlayer corrugated cylindrical shell and preparation method thereof

Abstract

The invention discloses a self-powered and vibration-sensing magnetorheological interlayer corrugated cylindrical shell and a preparation method thereof. The cylindrical shell is provided with an outer cylindrical shell and an inner cylindrical shell, and a composite corrugated interlayer is arranged between the outer cylindrical shell and the inner cylindrical shell; the composite corrugated interlayer is a ring formed by a plurality of trapezoidal fold lines; magnetorheological damping material units are arranged at the upper bottoms and / or the lower bottoms of the trapezoidal fold lines inthe axial direction of the inner cylindrical shell; a plurality of self-powered units are embedded in the circumference of the inner cylindrical shell; an MEMS vibration sensor and an integrated logiccircuit are embedded in the outer cylindrical shell. The self-powered and vibration-sensing magnetorheological interlayer corrugated cylindrical shell has the advantages that the inner cylindrical shell collects vibration energy and converts the vibration energy into electrical energy for storage; the outer cylindrical shell senses and detects the strength of the structural vibration through theembedded MEMS vibration sensor and the integrated logic circuit; the magnetorheological damping material units exert the damping buffer function, and finally, the self-adjusting and stepless active control over the damping performance of the overall composite cylindrical shell structure can be realized.

Description

technical field [0001] The invention belongs to the field of machinery, specifically a corrugated interlayer cylindrical shell, more specifically a corrugated interlayer cylindrical shell of composite material and a manufacturing method thereof. Background technique [0002] Fiber-reinforced composite materials have a series of advantages such as high specific strength, high specific modulus, good corrosion resistance, and good temperature stability. They are widely used in aviation, aerospace, machinery, ships, sports equipment, electrical equipment, medicine, weapon industry and Chemical industry and other fields. In engineering practice, there are a large number of typical thin-shell structural parts made of this type of material, such as composite material casings of aero-engines, composite pressure-resistant cylindrical shells for submersibles, and high-temperature-resistant composite materials used in liquid rocket engine combustion chambers. shell etc. As their stru...

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Problems solved by technology

For example, patent CN201710354091.2 and patent CN201510172294.0 respectively use different ideas and design related molds, which can successfully prepare metal corrugated sandwich cylindrical shells and composite material corrugated sandwich cylindrical shells, but the structure of corrugated cylindrical shells is simple, Single function without active control of damping performance

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