Assembly type anti-buckling supporting component with negative-poisson-ratio structure and manufacturing method

Abstract

The invention discloses an assembly type anti-buckling supporting component with a negative-poisson-ratio structure and a manufacturing method. The assembly type anti-buckling supporting component comprises an energy consumption core plate and an external constraint unit. The energy consumption core plate is an energy consumption core plate with the negative-poisson-ratio periodic porous structure, and is formed by negative-poisson-ratio cells, and the types of the negative-poisson-ratio cells include single-layer and multi-layer star types, concave hexagon types and criss-cross oval types. The core portion of the energy consumption core plate is connected with the external constraint unit through a non-sticky material. The relationship of the ratio of the length L of the energy consumption core plate to the height H of the energy consumption core plate meets the inequation L / H is larger than 15.45 and smaller than 17.02. The relationship of the ratio of the thickness t1 of the external constraint unit to the thickness t2 of the energy consumption core plate meets the inequation t2 / t1 is larger than 0.18 and smaller than 0.41. Due to the existence of the core plate with the negative-poisson-ratio structure, the assembly type anti-buckling supporting component can be kept in an elastic state under the action of small earthquakes, and a certain lateral rigidity can also be provided for the structure.

Description

technical field [0001] The invention relates to the technical field of structural engineering, in particular to a negative Poisson's ratio structural assembly anti-buckling support member. Background technique [0002] Negative Poisson's ratio structures are widely used in protection, shock absorption and buffer energy-absorbing devices due to their excellent energy absorption characteristics. energy dissipation properties. The principle is that when the negative Poisson's ratio component is subjected to tension and compression forces, the periodic negative Poisson's ratio cell rotates in its own plane to make the component exhibit better deformation performance, thereby consuming more external energy. [0003] The anti-buckling support member is widely used in the field of engineering earthquake resistance, and it consists of three parts: the core energy dissipation plate, the non-adhesive material layer, and the peripheral restraint unit. Its advantage is that under the ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an assembled anti-buckling support member with a negative Poisson’s ratio structure and a manufacturing method for the poor hysteretic performance of the component under large deformation when the existing buckling-resistant support acts on reciprocating loads, which is relatively simple for traditional assembly Negative Poisson's ratio periodic cell structure holes are designed for the core energy-dissipating plate of the anti-buckling support to enhance the hysteretic performance of the component under large deformation, so that the component has a more excellent and plump hysteresis loop

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