Foam-corrugated composite dot matrix metal sandwich conical shell and preparation method thereof

Abstract

The invention discloses a foam-corrugated composite dot matrix metal sandwich conical shell and a preparation method thereof. The foam-corrugated composite dot matrix metal sandwich conical shell comprises a corrugated core body; the corrugated core body has a conical metal corrugated structure and is arranged between an inner conical shell and an outer conical shell; foam filling materials are arranged in pores among the corrugated core body, the inner conical shell and the outer conical shell. The preparation method comprises the steps: firstly, preparing the corrugated core body by a conical corrugated mould; then preparing the inner conical shell and the outer conical shell; assembling the corrugated core body with the inner conical shell and the outer conical shell, to obtain a corrugated dot matrix metal sandwich conical shell; and splicing foam strips and the corrugated dot matrix metal sandwich conical shell to obtain the foam-corrugated composite dot matrix metal sandwich conical shell. The foam-corrugated composite dot matrix core body is combined together with the sandwich conical shell structure, and more shock energy is buffered and absorbed.

Description

technical field [0001] The invention belongs to the technical field of sandwich cone shells, in particular to a foam-corrugated composite lattice metal sandwich cone shell and a preparation method thereof. Background technique [0002] Thin-walled conical shells are widely used in many important civil and national defense industrial fields such as chemical industry, aerospace, transportation and nuclear energy equipment because of their advantages such as high specific energy absorption, high volumetric efficiency and good aerodynamic characteristics. Compared with the cylindrical shell, the axial pressure characteristic of the thin-walled conical shell shows a more stable load-displacement response, lower impact load (peak load), and a more stable and effective crushing energy-consuming deformation mechanism (suppressing the overall Euler The occurrence of buckling instability), thus showing more superior axial pressure energy absorption characteristics. However, the energ...

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Problems solved by technology

[0004] There is currently no literature published on the use of lattice porous materials for thin-walled conical shells

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