A three-dimensional rotary rigid body negative poisson's ratio impact-resistant energy-absorbing structure based on cement-based material and manufacturing method
By combining three-dimensional rotating rigid body unit cell design with ECC material, the problem of performance instability of two-dimensional negative Poisson's ratio structure under multiaxial stress was solved, achieving high-efficiency energy absorption and structural toughness, overcoming the molding difficulties of cement-based materials, and applied to the field of building and bridge collision protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHENGZHOU UNIV
- Filing Date
- 2026-03-26
- Publication Date
- 2026-07-17
AI Technical Summary
Existing two-dimensional negative Poisson's ratio structures are unstable under complex multiaxial stress or impact loads, making it difficult to fully utilize their three-dimensional spatial deformation and energy dissipation potential. Furthermore, the molding process of three-dimensional negative Poisson's ratio structures made of cement-based materials is difficult, limiting their application in the field of civil engineering collision protection.
By combining a three-dimensional rotating rigid body unit cell design with engineering cement-based composite materials, a three-dimensional rotating rigid body negative Poisson's ratio impact-absorbing structure is manufactured using 3D printing technology. ECC material is used and cured to form a stable three-dimensional structure.
It achieves a stable negative Poisson's ratio effect under complex multiaxial loads, improves energy absorption capacity and structural toughness, solves the molding problem of cement-based materials, and makes them have excellent mechanical properties and feasibility in engineering such as building impact resistance and bridge collision protection.
Smart Images
Figure CN122401631A_ABST