Effect of uniform and nonuniform temperature distributions on sound transmission loss of double-walled porous functionally graded magneto-electro-elastic sandwich plates with subsonic external flow

Saffari, Peyman Roodgar; Sirimontree, Sayan; Thongchom, Chanachai; Jearsiripongkul, Thira; Saffari, Pouyan Roodgar; Keawsawasvong, Suraparb

doi:10.1016/j.ijft.2023.100311

Cited by 17 publications

(4 citation statements)

References 49 publications

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“…Plates manufactured with FGMs are microscopically heterogeneous and made from two isotropic materials: a metal and a ceramic. The utilization of FGMs can be seen in several applications, such as construction, energy, and aerospace [1,2]. Elastic buckling indicates the sudden deformation of structures; hence, investigating buckling performance is of much interest in structural engineering [3].…”

Section: Introductionmentioning

confidence: 99%

Elastic Buckling Behavior of Functionally Graded Material Thin Skew Plates with Circular Openings

Alashkar,

Elkafrawy,

Hawileh

et al. 2024

Buildings

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

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Section: Introductionmentioning

confidence: 99%

Elastic Buckling Behavior of Functionally Graded Material Thin Skew Plates with Circular Openings

Alashkar,

Elkafrawy,

Hawileh

et al. 2024

Buildings

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“…Phononic crystal [ 1 ] is an artificial periodic composite material/structure with an elastic wave band gap that has attracted extensive interest from scholars at home and abroad in recent years. Due to the elastic band gap characteristics [ 2 , 3 , 4 , 5 ] of the phononic crystal structure, vibration will be difficult to propagate in the corresponding band gap, so there are many potential applications in vibration and noise reduction [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ] that can be widely used in ships, aircraft, and other engineering fields. In existing studies, Bragg scattering [ 15 ] and local resonance [ 16 ] are the main mechanisms of band gap formation, between which locally resonant phononic crystals can generate low-frequency band gaps.…”

Section: Introductionmentioning

confidence: 99%

Sandwich Plate Structure Periodically Attached by S-Shaped Oscillators for Low Frequency Ship Vibration Isolation

et al. 2023

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

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“…In the past decades, the hot-deformation behaviors of TiAl alloys and other alloys at elevated temperatures have been examined, and predictive constitutive models have been developed on the basis of these investigations [14,15]. For instance, Kong et al [11] employed the Arrhenius type constitutive model to predict the peak stress of Ti-48Al-2Cr-4Nb-0.2Y alloys under deformation temperatures of 1100-1250 • C at strain rates of 0.01-1 s −1 , which suggested the optimal processing temperature and strain rate in the range of 1200-1230 • C and 0.01-0.05 s −1 , respectively.…”

Section: Introductionmentioning

confidence: 99%

Application of Constitutive Models and Machine Learning Models to Predict the Elevated Temperature Flow Behavior of TiAl Alloy

Zhao

Tian

et al. 2023

Materials

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

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Effect of uniform and nonuniform temperature distributions on sound transmission loss of double-walled porous functionally graded magneto-electro-elastic sandwich plates with subsonic external flow

Cited by 17 publications

References 49 publications

Elastic Buckling Behavior of Functionally Graded Material Thin Skew Plates with Circular Openings

Elastic Buckling Behavior of Functionally Graded Material Thin Skew Plates with Circular Openings

Sandwich Plate Structure Periodically Attached by S-Shaped Oscillators for Low Frequency Ship Vibration Isolation

Application of Constitutive Models and Machine Learning Models to Predict the Elevated Temperature Flow Behavior of TiAl Alloy

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