A novel 3D-printable tensegrity-inspired metamaterial enabling dynamic attenuation

IF 2.7 3区材料科学 Q2 ENGINEERING, MECHANICAL

International Journal of Mechanics and Materials in Design Pub Date : 2023-04-13 DOI:10.1007/s10999-023-09656-7

Hao Zeng, Ruinan Mu, Keyan Huo, Haifeng Zhao, Ke Wang, Anping Wang

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引用次数: 2

Abstract

Dynamic attenuation is a major concern in many engineering fields, and excessive energy inputs may cause fatal damages to the key devices. Therefore, there is always a demand to pursue a novel structure with the energy attenuation capacity. A metamaterial with periodic lattice-disc unit cells inspired by the tensegrity topological configuration is proposed in this study. Both theoretical and numerical modeling are conducted to examine the effects of geometrical dimensions on the bandgaps. Two types of chains are compared, including monoatomic and diatomic ones. With the increase of the number of unit cells, the dynamic attenuation effect of the bandgaps becomes prominent. This tensegrity-inspired metamaterial is 3D-printable by additive manufacturing technology. Both frequency sweep experiment and low-speed impact test are conducted. The torsional vibration mode is identified, which is decoupled with the axial vibration mode. Both improved spring-mass model and finite element model to describe the dual modes are developed to match well with the experiments. The behaviors of metamaterial bandgaps are fully verified by both numerical simulation and experiments. This study provides a novel idea for the design of additively-manufactured metamaterials for energy dissipation.

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一种新颖的3d打印受张拉整体启发的超材料，能够实现动态衰减

动态衰减是许多工程领域关注的焦点，过多的能量输入可能会对关键器件造成致命的损伤。因此，追求具有能量衰减能力的新型结构一直是一种需求。本文提出了一种受张拉整体拓扑结构启发的具有周期性格盘单元胞的超材料。通过理论和数值模拟研究了几何尺寸对带隙的影响。比较了两种链，包括单原子链和双原子链。随着单元胞数的增加，带隙的动态衰减效应变得突出。这种受张力整体启发的超材料可以通过增材制造技术进行3d打印。进行了扫频试验和低速冲击试验。确定了系统的扭转振动模态，并与轴向振动模态解耦。提出了改进的弹簧-质量模型和描述双模态的有限元模型，与实验结果吻合较好。通过数值模拟和实验验证了超材料带隙的行为。本研究为增材制造耗能超材料的设计提供了一种新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Mechanics and Materials in Design ENGINEERING, MECHANICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

6.00

自引率

5.40%

发文量

审稿时长

>12 weeks

期刊介绍： It is the objective of this journal to provide an effective medium for the dissemination of recent advances and original works in mechanics and materials'' engineering and their impact on the design process in an integrated, highly focused and coherent format. The goal is to enable mechanical, aeronautical, civil, automotive, biomedical, chemical and nuclear engineers, researchers and scientists to keep abreast of recent developments and exchange ideas on a number of topics relating to the use of mechanics and materials in design. Analytical synopsis of contents: The following non-exhaustive list is considered to be within the scope of the International Journal of Mechanics and Materials in Design: Intelligent Design: Nano-engineering and Nano-science in Design; Smart Materials and Adaptive Structures in Design; Mechanism(s) Design; Design against Failure; Design for Manufacturing; Design of Ultralight Structures; Design for a Clean Environment; Impact and Crashworthiness; Microelectronic Packaging Systems. Advanced Materials in Design: Newly Engineered Materials; Smart Materials and Adaptive Structures; Micromechanical Modelling of Composites; Damage Characterisation of Advanced/Traditional Materials; Alternative Use of Traditional Materials in Design; Functionally Graded Materials; Failure Analysis: Fatigue and Fracture; Multiscale Modelling Concepts and Methodology; Interfaces, interfacial properties and characterisation. Design Analysis and Optimisation: Shape and Topology Optimisation; Structural Optimisation; Optimisation Algorithms in Design; Nonlinear Mechanics in Design; Novel Numerical Tools in Design; Geometric Modelling and CAD Tools in Design; FEM, BEM and Hybrid Methods; Integrated Computer Aided Design; Computational Failure Analysis; Coupled Thermo-Electro-Mechanical Designs.