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.

动态衰减是许多工程领域的主要关注点，过多的能量输入可能会对关键器件造成致命损坏。因此，一直需要寻求一种具有能量衰减能力的新型结构。本研究提出了一种受张拉整体拓扑结构启发而具有周期性晶格盘晶胞的超材料。进行理论和数值建模以检查几何尺寸对带隙的影响。比较了两种类型的链，包括单原子链和双原子链。随着晶胞数量的增加，带隙的动态衰减效应变得突出。这种受张拉整体启发的超材料可通过增材制造技术进行 3D 打印。进行了扫频实验和低速冲击试验。识别扭转振动模式，与轴向振动模式解耦。改进的弹簧质量模型和描述双模式的有限元模型都被开发以与实验很好地匹配。数值模拟和实验都充分验证了超材料带隙的行为。该研究为设计增材制造的能量耗散超材料提供了一种新思路。