Noise reduction is of critical importance in many engineering applications. One way to
achieve noise reduction is using acoustic metamaterials. However, traditional acoustic …

Sound-absorbing materials (SAMs) have attracted significant interest for more than a century
owing to their rich physical properties and extensive potential in acoustic engineering. This …

Origami-based metamaterial has shown remarkable mechanical properties rarely found in
natural materials, but achieving tailored multistage stiffness is still challenging. We propose …

This paper analytically and experimentally investigates the potential of a piezoelectric
metamaterial beam with a spatial grading pattern for broadband vibration attenuation …

The ancient art of origami has inspired the design and fabrication of numerous acoustic and
energy-absorption mechanical metamaterials and metastructures. This study introduces an …

The noise control for machines and equipment in the workshop is important to reduce the
noise occupational diseases for the workers, and a novel acoustic metamaterial of modular …

The limited occupied space and various noise spectrum requires an adjustable sound
absorber with a smart structure and tunable sound absorption performance. The hexagonal …

新型机械超材料结构通常由一些简单的单元(称之为胞元) 通过三维规则阵列组合而成.
得益于超常的物理特性, 这些机械超材料结构往往具有轻质高强度, 多稳态, 优异能量吸收能力等 …

The variable noise spectrum for many actual application scenarios requires a sound
absorber to adapt to this variation. An adjustable sound absorber of multiple parallel …

In this paper, a continuously tunable acoustic metamaterial is proposed for broadband low-
frequency sound absorption. The metamaterial can be considered as a reconfigurable …