Intelligent deformable three-dimensional gradient negative poisson's ratio circular truncated cone thin-walled structure, preparation method and application thereof

By designing a three-dimensional gradient negative Poisson's ratio frustum thin-walled structure, combined with a honeycomb skeleton and driving rods, the problems of phase transformation hysteresis in shape memory alloys and high cost of driving devices were solved, achieving a highly adaptable and low-maintenance intelligent deformation effect.

CN117307941BActive Publication Date: 2026-06-09INSTITUTE OF PROCESS ENGINEERING CHINESE ACADEMY OF SCIENCES
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
INSTITUTE OF PROCESS ENGINEERING CHINESE ACADEMY OF SCIENCES
Filing Date
2023-10-09
Publication Date
2026-06-09

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Abstract

This invention provides a three-dimensional gradient negative Poisson's ratio frustum thin-walled structure, its preparation method, and its applications. The intelligently deformable three-dimensional gradient negative Poisson's ratio frustum thin-walled structure includes a three-dimensional gradient negative Poisson's ratio honeycomb skeleton structure and several structural driving rods. The external configuration of the three-dimensional gradient negative Poisson's ratio honeycomb skeleton structure is a frustum tube structure, belonging to a deformable skeleton structure composed of gradient concave hexagonal multi-cell units. The several structural driving rods are structural driving devices. The intelligently deformable overall structure of this invention exhibits continuous and reversible deformation under external field driving. The intelligently deformable overall structure of this invention, first prepared by 3D printing of the three-dimensional gradient negative Poisson's ratio honeycomb skeleton structure and then combined with several structural driving rods, can be used as an intelligently deformable mechanical metamaterial in protective engineering, artificial intelligence, wearable devices, medical devices, and artificial prostheses.
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