一种新型手性负泊松比结构的减振性能
Damping performance of a new chiral negative Poisson's ratio structure
刘旭畅 1李爽 2杨金水3
作者信息
- 1. 哈尔滨工程大学 航天与建筑工程学院,哈尔滨 150001
- 2. 哈尔滨工程大学 青岛创新发展基地,青岛 266000
- 3. 哈尔滨工程大学 航天与建筑工程学院,哈尔滨 150001;哈尔滨工程大学 青岛创新发展基地,青岛 266000
- 折叠
摘要
负泊松比结构作为一种典型的超材料结构,凭借其独特的变形机制与吸能特性,在航空航天、汽车交通等领域被广泛应用,但关于其减振特性的研究相对较少,研发同时具有高承载和优异缓冲吸能、阻尼减振等性能的多功能负泊松比结构的研究则更稀缺.受星形及内凹形负泊松比结构启发,提出了一种新型手性负泊松比结构,设计并使用 3D打印技术制备了 4种不同几何参数的构型.在前期的研究中,已发现该新型结构表现出优异的静力学性能及能量吸收特性.基于此,本文通过实验与数值模拟相结合的方式表征新型结构的减振性能,并与传统非手性负泊松比结构进行了对比.研究结果表明:该新型手性负泊松比结构负泊松比效应越强,减振性能越优.相关结果与规律可为新型手性负泊松比减振结构的设计提供理论指导.
Abstract
As a typical metamaterial,negative Poisson's ratio structures have been widely used in aerospace,auto-motive,and other fields due to their unique deformation mechanism and energy absorption characteristics.However,there is relatively little research on its vibration damping characteristics.Research on the development of multifunctional negative Poisson's ratio structures with simultaneous excellent load-bearing,energy-absorbing and vibration-damping properties is even more scarce.Inspired by the star-shaped and inner-concave negative Poisson's ratio structure,a novel chiral negative Poisson's ratio structure is proposed.Four configurations with different geometric parameters are designed and prepared by 3D printing technology.In the previous study,it has been found that the novel structure exhibits excellent static properties and energy absorption characteristics.Based on this,the damping performances of novel structures are demonstrated by combination of experiments and numerical simulations,which are compared with that of the conventional non-chiral negative Poisson's ratio structure.The results show that the stronger the negative Poisson's ratio effect of novel chiral negative Poisson's ratio structure,the better the vibration damping performance.The results and laws can provide theoretical guid-ance for the design of the novel chiral negative Poisson's ratio vibration damping structure.
关键词
负泊松比/手性结构/减振结构/超材料/3D打印/星形/内凹形Key words
negative Poisson's ratio/chiral structures/vibration-damping structures/metamaterials/3D printing/star-shaped/inner-concave引用本文复制引用
基金项目
国家自然科学基金(12172098)
哈尔滨工程大学青年科学家培育基金(79000012/010)
出版年
2024
NETL
NSTL
维普
万方数据