Analysis of Influence of Excitation Source Direction on Sound Transmission Loss Simulation Based on Alloy Steel Phononic Crystal DOI Open Access
Zhaofeng Guo, Ziming Wang, Yanchao Zhang

et al.

Processes, Journal Year: 2024, Volume and Issue: 12(11), P. 2446 - 2446

Published: Nov. 5, 2024

As a type of locally resonant phononic crystal, alloy steel crystals have achieved notable advancements in vibration and noise reduction, particularly the realm low-frequency noise. Their exceptional band gap characteristics enable efficient reduction at low frequencies. However, conventional transmission loss (TL) simulation finite structures remains benchmark for plate structure TL experiments. In this context, XY-direction crystal has been thoroughly investigated analyzed. Given complexity sound wave incident directions practical applications, often diverges from reality. Taking tungsten as an example, paper introduces novel element method (FEM) approach analyzing plates. By setting Z-direction excitation source, exhibits distinct responses compared to XY-direction. combining energy diagrams modes, impact various source on simulations is It observed that more pronounced response under longitudinal excitation. The map excited lacks flat region present map. Notably, maximum 131.5 dB, which significantly lower than 298 dB XY-direction, with regular peak distribution. This indicates closely related acoustic propagation within plate, whereas aligns insulation engineering applications. Therefore, future research plates should not be confined Further investigation analysis are necessary. will provide theoretical foundation methodological guidance crystals, enhancing completeness systematicness studies Simultaneously, it advance application

Language: Английский

Design of lightweight multifunctional honeycomb membrane-type acoustic metastructures for sound insulation DOI

X. Li,

X.H. Wang, Qianqian Wu

et al.

Mechanical Systems and Signal Processing, Journal Year: 2025, Volume and Issue: 227, P. 112364 - 112364

Published: Jan. 29, 2025

Language: Английский

Citations

0
Acoustic transmission loss of thermally loaded double-walled multilayer FG-GPLRC microplates integrated with magneto-electro-elastic layers DOI
J. Abdolhoseyni, M. Danesh

Mechanics Based Design of Structures and Machines, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 41

Published: March 8, 2025

Language: Английский

Citations

0
Enhancing vibration problem of temperature-dependent functionally graded cylindrical microshells using magneto-electro-elastic micropatches DOI Open Access
Peyman Roodgar Saffari, Jintara Lawongkerd, Thira Jearsiripongkul

et al.

Engineered Science, Journal Year: 2023, Volume and Issue: unknown

Published: Jan. 1, 2023

This research offers a thorough theoretical investigation of the vibration behavior functionally graded (FG) cylindrical microshells augmented with magneto-electro-elastic (MEE) micropatches, considering temperature-dependent material properties.The structure is further surrounded by Pasternak elastic medium.Accurate modeling structural achieved employing first-order shear deformation theory (FSDT).To account for size effect, modified strain gradient (MSGT) employed.The analysis focuses on temperature dispersion over thickness microshell, examining three distinct profiles: uniform, harmonic non-uniform, and nonlinear.The FG core's characteristics are distributed according to power law.The associated equations motion generated application Hamilton's principle subsequently solved Galerkin technique in order determine natural frequencies.The impact various parameters, including index, length scale variation, MEE patch characteristics, magnetic potential, medium's electric voltage free thoroughly investigated.The findings this study contribute understanding potential patches enhancing dynamic response microshells, offering valuable insights practical applications micro-electro-mechanical systems (MEMS) smart structures.

Language: Английский

Citations

7
An enhanced strain gradient model for temperature-dependent sound transmission loss in double-walled functionally graded microplates DOI
Samaneh Soleymani, Parham Memarzadeh, Davood Toghraie

et al.

Thin-Walled Structures, Journal Year: 2024, Volume and Issue: 201, P. 112001 - 112001

Published: May 16, 2024

Language: Английский

Citations

2
Application of Constitutive Models and Machine Learning Models to Predict the Elevated Temperature Flow Behavior of TiAl Alloy DOI Open Access
Rui Zhao, Jianchao He, Hao Tian

et al.

Materials, Journal Year: 2023, Volume and Issue: 16(14), P. 4987 - 4987

Published: July 13, 2023

The hot deformation behaviors of a Ti46Al2Cr2Nb alloy were investigated at strain rates 0.001-0.1 s-1 and temperatures 910-1060 °C. Under given conditions, the activation energy TiAl could be estimated as 319 kJ/mol. experimental results predicted by different predictive models including three constitutive data-driven models. most accurate model an artificial neural network (ANN) Arrhenius type strain-compensated Sellars (SCS) model, respectively. In addition, generalization capability ANN SCS was examined under conditions. known accurately predict flow stress alloys interpolated extrapolated strains with coefficient determination (R2) greater than 0.98, while R2 value smaller 0.5 strains. However, both performed poorly new A hybrid based on predictions shown to have wider capability. present work provides comprehensive study how choose for

Language: Английский

Citations

4
Elastic Buckling Behavior of Functionally Graded Material Thin Skew Plates with Circular Openings DOI Creative Commons
Adnan Alashkar, Mohamed Elkafrawy, Rami A. Hawileh

et al.

Buildings, Journal Year: 2024, Volume and Issue: 14(3), P. 572 - 572

Published: Feb. 21, 2024

This study investigates the elastic buckling behavior of Functionally Graded Material (FGM) thin skew plates featuring a circular opening. FGMs, known for their unique property gradients, have gained prominence in structural engineering due to mechanical performance and durability. Including opening introduces critical geometric consideration, influencing stability load-carrying capacity FGM plates. The examines effects angle, plate’s aspect ratio, position, size on load, normalized various failure modes through computer modeling finite element analysis. results offer valuable insights into interplay between material heterogeneity, configuration, stability. For instance, load increases by 29%, 82%, 194% with an increment angle from 0° 30°, 45°, 60°, respectively. Moreover, as shifts edge closer center, decreases 26%. is also dependent power index, increase index 0.2 5 reduced 1698 kN. research contributes advancement our understanding plates’ under loading conditions, implications design optimization innovative structures. findings presented provide foundation further exploration advanced composite materials applications engineering.

Language: Английский

Citations

1
Thermal Mechanical Bending Response of Symmetrical Functionally Graded Material Plates DOI Open Access

Mengna Han,

Zichan Li,

Zhicheng Huang

et al.

Materials, Journal Year: 2023, Volume and Issue: 16(13), P. 4683 - 4683

Published: June 28, 2023

This paper investigates the thermal mechanical bending response of symmetric functionally graded material (FGM) plates. article proposes a thermodynamic analysis model both FGM plate and sandwich plate, only involves four control equations unknown variables. The equation is based on refined shear deformation theory principle minimum potential energy. Navier method used to solve equation. According method, numerical examples are provided for thermo-mechanical under simply supported boundary condition, accuracy verified. Finally, parameter conducted investigate effects volume fraction index, side-to-thickness ratio, load, changes in core thickness behavior detail. It was found that deflection greater than while normal stress smaller plate. Moreover, sensitive nonlinear temperature changes.

Language: Английский

Citations

3
Nonlinear frequencies of porous functionally graded piezo-elasto-magneto plates with non-uniform thickness: a hybrid FEM-ANN predictive approach DOI

Vinyas Mahesh

Acta Mechanica, Journal Year: 2023, Volume and Issue: 235(2), P. 633 - 657

Published: Nov. 1, 2023

Language: Английский

Citations

2
Vibroacoustic Transfer Characteristics of Underwater Cylindrical Shells Containing Complex Internal Elastic Coupled Systems DOI Creative Commons
Shuqing Liu, Rui Huo, Likang Wang

et al.

Applied Sciences, Journal Year: 2023, Volume and Issue: 13(6), P. 3994 - 3994

Published: March 21, 2023

Cylindrical shells containing complex elastic coupling systems are the main structural form of underwater vehicles. Therefore, in this paper, vibroacoustic radiation problem cylindrical internal is studied. Firstly, dynamics model coupled system established through method integrated conductivity. The sound pressure distribution law and general magnitude relationship between performance index hydroacoustic vibration isolation investigated numerical simulation. A strategy global sensitivity analysis related parameter optimization carried out, by applying Sobol’ to model. It could be concluded that flap at low medium frequencies appears direction excitation force or perpendicular force, magnitudes correspondence level drop—power flow—hydroacoustic can expressed as a relatively simple function, transmission lower order resonance dominated configuration device, while higher more influenced modalities base structure. transfer power flow drop used objective functions optimise acoustic system, with best results obtained when together functions.

Language: Английский

Citations

1
Analysis of sound transmission loss in an infinite duct with three different finite linings DOI
Burhan Tiryakioğlu

International Journal of Modern Physics B, Journal Year: 2023, Volume and Issue: 38(28)

Published: Oct. 19, 2023

The study rigorously investigates the propagation of sound waves from an infinite duct lined with three different finite acoustically absorbing materials. Due to multiple discontinuity points, mode matching method effectively solved problem. mathematical equations involved are highly complex due distinct and linings. To overcome this, a numerical solution is obtained, effects geometry’s parameters on transmission loss thoroughly examined. As length acoustic lining increases, decreases. In addition, graphs clearly illustrate substantial influence that choice can have loss. These findings hold great relevance for absorber systems, highlighting importance careful selection in order achieve optimal performance. obtained results compared another study, complete agreement observed, indicating study’s accuracy reliability.

Language: Английский

Citations

1