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

и другие.

Processes, Год журнала: 2024, Номер 12(11), С. 2446 - 2446

Опубликована: Ноя. 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

Язык: Английский

A multi-physics coupling formulation for vibro-acoustic analysis of FGMEE plates DOI
Xinxin Wang, Tiangui Ye, Guoyong Jin

и другие.

International Journal of Mechanical Sciences, Год журнала: 2024, Номер 269, С. 109060 - 109060

Опубликована: Янв. 28, 2024

Язык: Английский

Процитировано

9

Vibration characteristics of multilayer functionally graded microplates with variable thickness reinforced by graphene platelets resting on the viscoelastic medium under thermal effects DOI Creative Commons
Jintara Lawongkerd, Peyman Roodgar Saffari, Thira Jearsiripongkul

и другие.

International Journal of Thermofluids, Год журнала: 2024, Номер 22, С. 100611 - 100611

Опубликована: Фев. 16, 2024

Due to their improved mechanical properties and adaptability, microplates with tailored variable thickness profiles are becoming essential parts of advanced micro- nanoelectromechanical systems (MEMS NEMS). This study conducts a thorough analytical analysis the vibration thermally loaded, multilayer functionally graded graphene platelet-reinforced composite (FG-GPLRC) linearly or parabolically varying resting on viscoelastic medium under different boundary conditions. The Halpin-Tsai micromechanical model law mixtures employed calculate effective material characteristics for various reinforcement distributions in microplate. These encompass uniformly symmetric asymmetric arrangements. utilized first-order shear deformation theory (FSDT) conjunction modified strain gradient (MSGT) Hamilton's principle generate dynamic governing equations structure, accounting size-dependent effects. resulting afterwards solved using utilization Galerkin technique. enables evaluation proposed solution's correctness precision. impact factors behavior is investigated through numerical analysis. length scale parameters, temperature fluctuations, distribution profiles, conditions, pattern GPL, taper constants both unidirectional bidirectional scenarios, weight fraction GPL.

Язык: Английский

Процитировано

9

The acoustic radiation analysis of SFGP conical shell DOI
Yuhang Yang, Guoyong Jin, Xueren Wang

и другие.

International Journal of Mechanical Sciences, Год журнала: 2024, Номер 267, С. 109027 - 109027

Опубликована: Янв. 9, 2024

Язык: Английский

Процитировано

7

Porosity-dependent wave propagation in multi-directional functionally graded nanoplate with nonlinear temperature-dependent characteristics on Kerr-type substrate DOI Creative Commons
Pouyan Roodgar Saffari, Chanachai Thongchom, Thira Jearsiripongkul

и другие.

International Journal of Thermofluids, Год журнала: 2023, Номер 20, С. 100408 - 100408

Опубликована: Июнь 27, 2023

The present study investigates the wave propagation characteristics of porous, multi-directional, functionally graded (FG) nanoplates embedded in a Kerr-elastic substrate. A first-order shear deformation model (FSDM) and nonlocal strain gradient approach (NSGA) are utilized to address this issue. NSGA is enhanced by considering softening hardening material effects, leading improved accuracy obtained results. In accordance with law mixing, properties exhibit nonlinear temperature-dependent variations along structural axes. Both even uneven porosity profiles considered study. nonclassical governing equations for proposed structure derived using Hamilton's approach. phase velocity frequency determined through analytical solution an eigenvalue problem, which depends on number. dispersion waves porous FG examined respect various factors, including distributions, numbers, elastic foundation coefficients, volume fraction index. main findings indicate that increasing index thickness direction leads decrease nanoplate given Additionally, regardless pattern, increase coefficient results velocity.

Язык: Английский

Процитировано

17

Free and Forced Vibration of Sandwich FGM Porous Variable Thickness Nanoplates Integrated with Magneto-Electro-Elastic Layers Via Nonlocal Strain Gradient Theory DOI Open Access
Peyman Roodgar Saffari,

Sayan Sirimontree,

Chanachai Thongchom

и другие.

Engineered Science, Год журнала: 2023, Номер unknown

Опубликована: Янв. 1, 2023

In the present study, free and forced vibration analysis of sandwich smart magneto-electro-elastic (MEE) nanoplates with functionally graded material porous (FGMP) linearly or parabolically varying thickness core layer under initial external electric magnetic potentials is studied using first-order shear deformation theory (FSDT) nonlocal strain gradient (NSGT).NSGT perfected softening hardening effects, which can significantly improve precision results.Three states porosity distribution patterns, i.e., even, uneven, logarithmic-uneven distributions are considered for FGMP layer, supposed to vary along in-plane directions.The related governing equations obtained in time domain by applying Hamilton's principle.The established solution examined terms its via a comparison other available data.Studies parameters show effects unidirectional bidirectional taper constants, potentials, distributions, FG index, characteristics on vibration.

Язык: Английский

Процитировано

14

Hygrothermomechanical loading-induced vibration study of multilayer piezoelectric nanoplates with functionally graded porous cores resting on a variable viscoelastic substrate DOI Creative Commons
Thira Jearsiripongkul, Peyman Roodgar Saffari, Chanachai Thongchom

и другие.

International Journal of Thermofluids, Год журнала: 2024, Номер 23, С. 100715 - 100715

Опубликована: Май 28, 2024

Язык: Английский

Процитировано

5

Sandwich Plate Structure Periodically Attached by S-Shaped Oscillators for Low Frequency Ship Vibration Isolation DOI Open Access
Chaoming Shen, Jie Huang, Zexin Zhang

и другие.

Materials, Год журнала: 2023, Номер 16(6), С. 2467 - 2467

Опубликована: Март 20, 2023

Locally resonant phononic crystals are a kind of artificial periodic composite material/structure with an elastic wave band gap that show attractive application potential in low-frequency vibration control. For control problems ship power systems, this paper proposes crystal board structure, and based on the Bloch theorem it uses finite element method to calculate structure displacement fields corresponding characteristic mode transmission curve sandwich plate characteristics studied. The mechanism formation is mainly attributed coupling structure. Numerical results has double periodicity, so multi-stage gap, which can fully inhibit flexural waves isolate vibration. experimental measurements spectra were conducted validate accuracy reliability numerical calculation method. On basis, proposed isolation marine system discussed. A platform mounted steel studied by simulation, protect electronic equipment precision instruments.

Язык: Английский

Процитировано

11

Thermo-vibro-acoustic analysis of pavement under a harmonically rectangular moving load DOI Creative Commons
Pouyan Roodgar Saffari, Chanachai Thongchom, Thira Jearsiripongkul

и другие.

International Journal of Thermofluids, Год журнала: 2023, Номер 20, С. 100409 - 100409

Опубликована: Июнь 28, 2023

This study presents an analytical framework based on the third-order shear deformation theory (TSDT) to conduct a comprehensive thermo-vibro-acoustic evaluation of multi-layered asphalt system subjected harmonically rectangular moving load. The research aims investigate dynamic response and sound radiation characteristics pavement under various operating conditions. materials methods employed in this are as follows: temperature variations along thickness axis layers considered, Hamilton's principle is adopted derive governing equations time-based domain. then solved Laplace domain using Fourier series transform. acoustic pressure generated by load investigated applying Durbin's numerical transform inversion technique analyzing Rayleigh integral. accuracy flexibility proposed approach demonstrated through comparisons with previous studies finite element (FE) simulations COMSOL Multiphysics®. Finally, analysis conducted examine impact factors, including frequency velocity excitation load, viscoelastic medium, temperature, both pavement. Some major findings An increase leads higher waves closer spacing between them, resulting elevated amplitude. Higher temperatures cause increased softness rutting depth loads. offers novel practical contribution field systems presenting for providing valuable insights into

Язык: Английский

Процитировано

11

A quadruple physics coupling model for vibro-acoustic analysis of heavy fluid-loaded porous FGMEE plates via partition collocation points method DOI
Xinxin Wang, Tiangui Ye, Guoyong Jin

и другие.

Thin-Walled Structures, Год журнала: 2024, Номер 203, С. 112181 - 112181

Опубликована: Июль 2, 2024

Язык: Английский

Процитировано

4

Effect of Magnetic Field on Vibration of Electrorheological Fluid Nanoplates with FG-CNTRC Layers DOI
Peyman Roodgar Saffari, Sikiru Oluwarotimi Ismail, Chanachai Thongchom

и другие.

Journal of Vibration Engineering & Technologies, Год журнала: 2023, Номер 12(3), С. 3335 - 3354

Опубликована: Июнь 24, 2023

Язык: Английский

Процитировано

9