A Double Arrow Type Negative Poisson's Ratio Structure

Abstract

A double-headed arrow type negative poisson ratio structural body relates to the structural body field of space lattice structures, and includes a double-headed arrow type negative poisson ratio structural unit, wherein the double-headed arrow type negative poisson ratio structural unit includes an upper cross beam, a lower cross beam, a first upper diagonal bar, a second upper diagonal bar, a first lower diagonal bar, a second lower diagonal bar, a first middle diagonal bar and a second middle diagonal bar; a first upper connecting base, a second upper connecting base, a first lower connecting base and a second lower connecting base are respectively arranged at the lower ends of the first upper diagonal bar, the second upper diagonal bar, the first lower diagonal bar and the second lowerdiagonal bar, so as to form the double-headed arrow type negative poisson ratio structural unit; in space, the double-headed arrow type negative poisson ratio structural unit adopt the first upper connecting base, the second upper connecting base, the first lower connecting base, the second lower connecting base, the upper cross beam and the lower cross beam as connecting pieces for combined connection to form the double-headed arrow type negative poisson ratio structural body with the stereostructure. The double-headed arrow type negative poisson ratio structural body has the advantages of simple structure, high stability, light weight in unit space, high compression resistance, high impact resistance, and the like.

Description

technical field [0001] The present invention relates to the structure field of spatial lattice structure, in particular to the design and assembly process of spatial lattice structure, specifically a simple structure, high stability, small mass (density) in unit space, compression resistance and impact resistance Strong double-arrow-shaped negative Poisson's ratio structure. Background technique [0002] We know that the lattice structure is a new type of lightweight structure. Compared with the traditional foam and honeycomb structure, it has higher specific strength and specific stiffness, and the core has a larger porosity inside, making it more durable. There are broader prospects in the application of functional structures. The negative Poisson's ratio structure has a wide range of application prospects in the design of the automotive industry due to its excellent mechanical properties and good energy absorption capacity. It can be used in structural design to improve ...

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Problems solved by technology

On February 12, 2014, the State Intellectual Property Office announced an application for an invention patent named a negative Poisson's ratio structural part with the application number: 201310566039.5. However, the shock resistance or cushioning parts of this structure have the disadvantages of poor structural stability, poor compression resistance and impact resistance; and the double arrow type negative Poisson's ratio structure has complex manufacturing methods and high costs, which limits the use of this type of structure. Practical use and experimental research of structures

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