Sandwich energy-absorbing device

Abstract

The invention provides a sandwich energy-absorbing device which comprises an upper panel, a lower panel, lateral plates and a core plate layer, wherein the core plate layer is fed in a closed space formed by enclosing the upper panel, the lower panel and the lateral plates, and the core plate layer comprises core materials and a shear thickening fluid material fed between the core materials and / or fed between the core materials and the closed space. When an energy-absorbing device suffers from an action an external impact, structures of the upper panel, the lower panel, the lateral plates and the core materials rapidly deform, so that a quick shear action is applied to the shear thickening fluid material fed in a core plate, the viscosity of the shear thickening fluid material with a relatively high shear strain rate is rapidly improved, and thus impact energy is rapidly dissipated, and relatively high specific strength, specific stiffness and vibration resistance and energy absorption capabilities are achieved.

Description

technical field [0001] The invention relates to energy-absorbing technology, in particular to a sandwich energy-absorbing device. Background technique [0002] Space lattice sandwich energy-absorbing structure is an effective energy-absorbing structure that dissipates impact load energy through large plastic deformation. The sandwich structure is generally a porous metal structure. Compared with traditional single-layer panels, the panel sandwich structure has higher specific strength and specific stiffness, and also has functions such as shock absorption, temperature insulation, and sound absorption. The structural weight is reduced and the cost is reduced while meeting the mechanical performance requirements. The panel sandwich structure is usually used for the optimal design of lightweight structures, and has a large number of applications in engineering. [0003] Traditional lattice sandwich panels generally absorb energy through large plastic deformation of structura...

AI Technical Summary

Problems solved by technology

[0004] Traditional lattice sandwich panels and foam sandwich panels mainly absorb energy through the plastic deformation of panels and sandwich materials. Sandwich panels have certain strength and stiffness, but the overall energy absorption effect is not ideal

When the sandwich material is solid, the energy absorption effect is obviously improved, but the anti-vibration performance of the structure is poor.

Therefore, the existing sandwich panel structure cannot satisfy the structural strength, stiffness, vibration resistance, shock resistance and energy absorption performance at the same time.

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