A buffer and vibration suppression structure with both concave and chiral negative Poisson's ratio effects

Abstract

The invention relates to the field of structures with negative Poisson's ratios, particularly to a buffering vibration-suppressing structure with concavity and chirality and with the effect of a negative Poisson's ratio. The buffering vibration-suppressing structure comprises a plurality of units of the same structure and with the effect of the negative Poisson's ratio, wherein each unit is shapedlike a figure in rotational symmetry and comprises a central structure and peripheral structures; the central point of the central structure is located in the center of the unit; the peripheral structures are uniformly arranged around the central structure; and a whole structure with both concave and chiral properties is obtained through a two-dimensional ordered arrangement. The buffering vibration-suppressing structure can make full use of the performance advantages of the traditional chiral and concave structures, thereby improving the energy absorption capacity of the whole structure, sothat the structure have a more stable stage of plateau stress in the process of energy absorption for buffering; and the advantage is particularly obvious under high-speed impact.

Description

Technical field[0001]The present invention relates to the field of negative pocolis, and more particularly to a buffer inhibition structure having both a concave and chiral negative bearis.Background technique[0002]Negative Poat Survey has a wide focus on its own novel and unique nature, such as bulk resistance characteristics, porosity / permeability, depending on strain variability. At the same time, many mechanical properties of the negative structure are enhanced compared to the ordinary structure. Negative Poats is a nature that is not related to the scale, both of which can achieve negative bearis ratio in macro, micro or interview. It is precisely due to the excellent characteristics of Negative Poat Surface and its covered scale determine its broad application prospects. Automobile industry, such as shock absorber, vehicle explosion-proof, suction box, etc .; aerospace sectors, such as space can be expanded, variants wing, etc., ship marine industries, such as ship protectio...

AI Technical Summary

Problems solved by technology

The traditional chiral structure, the rotation center of the unit body and the ligament are not negative Poisson's ratio structures, which cannot give full play to the performance advantages of the traditional chiral structure and concave structure, and the energy absorption capacity of the overall structure is poor; at the same time, the stability of the structure is also It needs to be improved. In the process of buffering energy absorption of high-speed impact, it is impossible to achieve a stable platform stress stage

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