Broadband Lamb wave trapping in cellular metamaterial plates with multiple local resonances

Scientific Reports
De-Gang ZhaoXue-Feng Zhu

Abstract

We have investigated the Lamb wave propagation in cellular metamaterial plates constructed by bending-dominated and stretch-dominated unit-cells with the stiffness differed by orders of magnitude at an ultralow density. The simulation results show that ultralight metamaterial plates with textured stubs deposited on the surface can support strong local resonances for both symmetric and anti-symmetric modes at low frequencies, where Lamb waves at the resonance frequencies are highly localized in the vibrating stubs. The resonance frequency is very sensitive to the geometry of textured stubs. By reasonable design of the geometry of resonant elements, we establish a simple loaded-bar model with the array of oscillators having a gradient relative density (or weight) that can support multiple local resonances, which permits the feasibility of a broadband Lamb wave trapping. Our study could be potentially significant in designing ingenious weight-efficient acoustic devices for practical applications, such as shock absorption, cushioning, and vibrations traffic, etc.

References

Sep 27, 1993·Physical Review Letters·M S KushwahaB Djafari-Rouhani
Sep 8, 2000·Science·Z LiuP Sheng
Aug 25, 2004·Physical Review Letters·Suxia YangPing Sheng
Aug 28, 2007·Nature Materials·Ming-Hui LuNai-Ben Ming
Jan 15, 2011·Physical Review Letters·Xuefeng ZhuJianchun Cheng
Mar 17, 2011·Physical Review Letters·Shu ZhangNicholas Fang
Jun 28, 2011·Nature Materials·Yun LaiZhao-Qing Zhang
Jul 21, 2011·Physical Review Letters·Bogdan-Ioan PopaSteven A Cummer
Feb 7, 2012·Physical Review Letters·Nicolas StengerMartin Wegener
Jun 21, 2014·Science·Xiaoyu ZhengChristopher M Spadaccini
Jun 28, 2014·Physical Review Letters·Matthieu RupinPhilippe Roux

❮ Previous
Next ❯

Citations

Feb 4, 2016·Scientific Reports·Wooju LeeDongchoul Kim
Jan 6, 2017·Scientific Reports·Zhenhua Tian, Lingyu Yu

❮ Previous
Next ❯

Software Mentioned

COMSOL Multiphysics

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.