Results 31 to 40 of about 6,758 (159)

Development of vertical incident sound insulation simulation technology using finite element method and application to lightweight core

Nihon Kikai Gakkai ronbunshu, 2020
If the octet truss core, which is a space filling structure of half regular octahedrons and regular tetrahedrons, has excellent sound insulation characteristics, the possibility of using the octet truss core is sufficiently widened.
Aya ABE, Haruki YASHIRO, Ichiro HAGIWARA
doaj   +1 more source

Relationship Between the Sound Transmission Through the Finite Double-Panel Structure with a Cylindrical Shell Array and the Vibro-Acoustic Characteristics of its Constituents

Archives of Acoustics, 2023
Sound insulation of the finite double-panel structure (DPS) inserted with a cylindrical shell array is investigated by varying the sound incidence direction to improve its applicability.
Myong-Jin KIM, Song-Hun KIM
doaj   +1 more source

Evaluation Method for Façade Acoustic Insulation for a Corner Room: Discussion on the Results Obtained as a Function of the Source Position

Applied Sciences, 2020
The appropriate acoustic insulation project of building façades is of importance for the design of highly comfortable living environments. In some countries, national regulations require maximum noise levels inside rooms, or minimum sound insulation ...
Nicola Granzotto, Edoardo Alessio Piana
doaj   +1 more source

Strength Analysis of Sound Insulation Body in Ring Groove for Acoustic Logging While Drilling

Shiyou jixie, 2017
The sound insulation body in ring groove is a kind of sound insulation body that is commonly used in the acoustic logging while drilling. The numerical simulation method has been used to study the maximum equivalent stress area of the sound insulation ...
Wu Neng, Zhao Honglin, Liu Xu, Li Yufang
doaj  

Low-frequency acoustic isolation performance of Helmholtz cavity acoustic metamaterials with bilateral single openings

AIP Advances
In this study, we designed a single-opening Helmholtz chamber type acoustic metamaterial with two sides. The complexity of the open channel results in the material having a low frequency of the first sound insulation peak and excellent sound insulation ...
PeiZhou Hu, Jing-Bo Zhao, Hong Liu, XiaoSheng Zhang, Hong Yao, Guang-jun Zhang   +5 more
doaj   +1 more source

Effects of Molding Pressure on Mechanical and Sound Insulation Properties of Hybrid Composites Reinforced with a Core–Shell Structure Composed by Continuous Sisal and Carbon Fiber

Journal of Natural Fibers
Natural fiber has been widely used as reinforcement in polymer composites, and the excellent sound insulation and lower mechanical properties of natural fiber increased research interest in hybrid fiber-reinforced composites.
Kaomin Zhang, Fenglin Tian, Xiaoyu Yang, Haiting Xia, Yinghui Zhao, Zhenhu Miao, Yongtian Zou   +6 more
doaj   +1 more source

Effect of Diffusing Elements in a Reverberation Room on the Results of Airborne Sound Insulation Laboratory Measurements

Archives of Acoustics, 2019
The main problem in the measurement of airborne sound insulation is the measurement of the sound power radiated by the barrier, in practice performed by measuring the sound pressure level and the acoustic absorption in the receiving room.
Dominik MLECZKO, Tadeusz WSZOŁEK
doaj   +1 more source

Sound Insulation Characteristics Optimization Design of Hydrogen Train’ Interior Floor

机车电传动, 2017
Structure of floor is one of the main path in which wheel-rail noise and underbody electrical equipment noise transmit to interior of the vehicle. Interior floor is one of the important parts of the whole floor structure, the reasonable design of the ...
LUO Zhuhui, ZHOU Xisheng, HE Caichun, WU Hongwei, WANG Jianliang   +4 more
doaj  

Improving Sound Insulation in Low Frequencies by a Three-Component Cladding Acoustic Metamaterial Panel

Archives of Acoustics
In this paper, a three-component cladding acoustic metamaterial panel with good sound insulation effect in the low-frequency range is proposed. The sound transmission loss of metamaterial panels under different structural configurations and different ...
Na TAN, Xiaowei YAN, Bingfei LIU
doaj   +1 more source

The Influence of Rosin, Blowing Agent, and Mould Type on the Sound Insulation of Paper-based Foams

BioResources, 2022
Wooden foams have been extensively researched in recent years because of their special structure and green features. At the same time, noise pollution is increasing, prompting sound insulation to become another research focus.
Haoyuan Li, Lin Luo, Jiantong Qiao, Xinyu Li, Jiahe Tu, Qingchun Wang, Zhongjia Chen   +6 more
doaj   +2 more sources