The mechanism of adjusting the low-frequency ultra-wide band gap within lightweight spherical superstructue

机制(生物学) 材料科学 带隙 物理 光电子学 量子力学
作者
Yongyan Zhang,Zebo Zhao,Xiangjie Miao,Jiu Hui Wu,Liming Chen,Biao Li,Hui Liu,Leipeng Yang,Q. Liu,Tao Chen,Suobin Li
出处
期刊:Physica Scripta [IOP Publishing]
卷期号:99 (10): 105972-105972 被引量:1
标识
DOI:10.1088/1402-4896/ad74a3
摘要

Abstract Conventional resonant structures can be effective in obtaining broadband, but it is still a challenge to design small-sized and lightweight acoustic metamaterials with a low-frequency ultra-wideband. This paper proposes a new approach of designing a lightweight spherical localized resonance superstructure with adjustable stiffness ratio, and the mechanism of adjusting the low-frequency ultra-wide forbidden band is revealed. Then, the correlation between the zero value of its dynamic equivalent mass and the stiffness ratio of the system is studied. It is found that not only is the upper bound of the negative mass effectively broadened, but also the lower bound is successfully lowered only by adjusting the stiffness ratio of the sphere. Most importantly, based on the regulation mechanism with adjustable stiffness ratio, the lower boundary of the band gap is lowered from 171 Hz to 141 Hz, and the upper boundary is increased from 445 Hz to 710 Hz. Therefore, the low-frequency ultra-wideband of 141–710 Hz is obtained only by adjusting the stiffness ratio of the system and the Finite Element Method, which is highly consistent with theoretical analyses. Obviously, the mechanism of obtaining the low-frequency wideband through adjusting the stiffness ratio not only provides a novel idea for adjusting the low-frequency ultra-wideband, but also provides theoretical guidance for the developing the small-size and lightweight acoustic devices, so it would have potential application in the field of vibration and noise reduction.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
李健的小迷弟应助Kvolu29采纳,获得10
刚刚
苏碧萱发布了新的文献求助10
2秒前
hey发布了新的文献求助10
3秒前
美有姬完成签到,获得积分10
4秒前
4秒前
5秒前
momo发布了新的文献求助10
5秒前
6秒前
6秒前
冷酷的树叶完成签到 ,获得积分10
6秒前
8秒前
天天快乐应助西门亿先采纳,获得10
8秒前
9秒前
lay发布了新的文献求助10
9秒前
10秒前
11秒前
LIYUAN发布了新的文献求助10
11秒前
sian完成签到,获得积分10
13秒前
14秒前
默默安双发布了新的文献求助10
14秒前
老八的嘴发布了新的文献求助10
14秒前
呆萌幻竹发布了新的文献求助10
15秒前
15秒前
16秒前
充电宝应助momo采纳,获得10
16秒前
木木发布了新的文献求助10
16秒前
麦田稻草人完成签到,获得积分10
17秒前
玄武岩完成签到,获得积分10
18秒前
研友_VZG7GZ应助悦悦采纳,获得10
18秒前
包容的夏之完成签到,获得积分10
19秒前
吕武全发布了新的文献求助10
19秒前
Rickee9999完成签到,获得积分20
19秒前
19秒前
Orange应助长情的沛岚采纳,获得10
20秒前
呵呵哒发布了新的文献求助10
20秒前
21秒前
风筝完成签到,获得积分10
21秒前
22秒前
22秒前
23秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
Immigrant Incorporation in East Asian Democracies 600
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
A Preliminary Study on Correlation Between Independent Components of Facial Thermal Images and Subjective Assessment of Chronic Stress 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3966681
求助须知:如何正确求助?哪些是违规求助? 3512158
关于积分的说明 11162133
捐赠科研通 3247021
什么是DOI,文献DOI怎么找? 1793676
邀请新用户注册赠送积分活动 874532
科研通“疑难数据库(出版商)”最低求助积分说明 804421