Influence of coupled fields on free vibration and static behavior of functionally graded magneto-electro-thermo-elastic plate

Mahesh, Vinyas; Sagar, Piyush J; Kattimani, Subhaschandra

doi:10.1177/1045389x17740739

Cited by 53 publications

(6 citation statements)

References 49 publications

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“…1. First-order shear deformation theory (FSDT) [38] In a similar way, the shear strains can be expressed as follows [37]:…”

Section: Displacement Equationsmentioning

confidence: 99%

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Archives of Foundry Engineering

Lakshmikanthan¹,

Mahesh²,

Prabhu³

et al. 2020

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In this work, the free vibration behaviour of A357 composite plate reinforced with dual particle size (DPS) (3 wt.% coarse + 3 wt.% fine, 4 wt.% coarse + 2 wt.% fine, and 2 wt.% coarse + 4 wt.% fine) SiC is evaluated using the finite element method. To this end, first-order shear deformation theory (FSDT) has been used. The equations of motion have been derived using Hamilton's principle and the solution has been obtained through condensation technique. A thorough parametric study was conducted to understand the effect of reinforcement size and weight fraction, boundary conditions, aspect ratio and length-to-width ratio of plate geometry on natural frequencies of A357/DPS-SiC composite plates. Results reveal significant influence of all the above variables on natural frequency of the composite plates. In all the cases, A357 composite plate reinforced with 4 wt.% coarse and 2 wt.% fine SiC particles displayed the highest natural frequency owing to its higher elastic and rigidity modulus. Further, the natural frequencies increase with decrease in aspect ratio of the plate geometry. Natural frequency also decreases with increase in the number of free edges. Lastly, increasing the length-to-width ratio drastically improves the natural frequency of the plates.

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“…1. First-order shear deformation theory (FSDT) [38] In a similar way, the shear strains can be expressed as follows [37]:…”

Section: Displacement Equationsmentioning

confidence: 99%

“…Using an 8 noded isoparametric element, the finite element model for composite plate is generated. The generalized degrees of freedom (DOF) of the element can be represented as [37],…”

Section: Finite Element Formulationmentioning

confidence: 99%

Archives of Foundry Engineering

Lakshmikanthan¹,

Mahesh²,

Prabhu³

et al. 2020

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“…Besides the mechanical properties of polymer composite materials, vibration damping capability of materials, has great importance that affects system performance and stability. In recent years, there are a large number of studies [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] that have been made considering of non metal composites products using 3D printing. However, a limited number of studies have been conducted in the literature on vibration damping capability of products made from composite materials using FDM method.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of vibration damping capabilities of 3D printed metal/polymer composite sleeve bearings

Kam

İpekçi

2022

Journal of Thermoplastic Composite Materials

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Additive Manufacturing (AM) method enables to produce products easily, cheaply and quickly with more complex geometry compared to traditional production methods. In this context; Fused Deposition Modeling (FDM) is a widely used for AM method that requires a large number of process parameters. In this study, it is aimed to experimentally investigate the damping capabilities of the metal/polymer composite sleeve bearings printed using FDM. A total of 54 pieces (27 pairs) were printed from composite filaments such as nine pairs for each of PLA, PLA + 20% Bronze, and PLA + 20% Copper metal/polymer with different filling structures (Octogram spiral, Archimedian chords, and 3D Honey comb) and different occupancy rates (10, 30, and 50%), respectively. The experiments were carried out using the shaft-bearing system under the same operating conditions at a rotational speed of 900 revolution per minute (rpm), and vibration data was collected from the rotating shaft with proxy probes. Rotating shaft position is very important to determine journal position in bearing for understanding deterioration in the bearing. Bode and Orbit plots are used to detect the level of deterioration in the bearing. The value of bearing to shaft clearence can vary widely depending on application. Since the bearings were heavily loaded, they were compressed by radial load caused large clearence. The results showed that compressed bearing had significant influence on the stability of rotating shaft system and significant differences in damping capabilities of composite sleeve bearings with different filling structures and occupancy rate. Increasing occupancy rate decreases the vibration amplitude values in copper-reinforced sleeve bearing but increases in bronze-reinforced sleeve bearing. From the microstructure analysis, it has been observed that the vibration absorbation capability is better due to the more homogeneous distribution of the copper reinforced bearings than the bronze reinforced bearings. Also, vibration absorption capability of sleeve bearings with 3D Honeycomb filling structureis increased significantly proportion to the occupancy rate.

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“…Vinyas and Kattimani studied the static 21 and free vibration 22 behavior of MEE plates under hygrothermal environmental conditions using FEM. The natural frequency analysis of FGMEE plates was carried out using FEM by Vinyas et al 23 A FEM formulation accounting for Multiphysics static behavior of multilayered MEE plates in the thermal environmental condition was reported by Vinyas and Kattimani. 24 Using FEM, the free vibration analysis of carbon nanotube-reinforced MEE plates was presented by Vinyas.…”

Section: Introductionmentioning

confidence: 99%

Effects of porosity, profile of thickness, and angular acceleration on the magneto-electro-elastic behavior of a porous FGMEE rotating disc placed in a constant magnetic field

Saadatfar

Zarandi

Babaelahi

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Effects of porosity, profile of thickness and angular deceleration on the stress and deformation of a fluid-saturated functionally graded porous magneto-electro-elastic rotating disc are investigated in this article. Since the angular velocity is taken to be variable, the disc is subjected to Lorentz force in two directions: radial and circumferential. It is assumed that material properties of the disc obey power-law function of radius. The disc is uniformly porous and its thickness varies as a function of radius. First, three coupled governing partial differential equations in terms of the displacement and electric potential are converted to ordinary differential equations employing the separation of variable method. Then, obtained equations are solved using the Runge–Kutta and shooting methods for the case of fixed–free boundary condition. The effect of variable angular velocity, thickness profile, inhomogeneity index, porosity, and magnetic field is studied and illustrated graphically. The results demonstrate that considering angular acceleration for the disc has a considerable effect on the Lorentz force resulted from the magnetic field. Besides, the angular velocity constant has a significant effect on the stresses and displacements in the presence of the magnetic field.

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Influence of coupled fields on free vibration and static behavior of functionally graded magneto-electro-thermo-elastic plate

Cited by 53 publications

References 49 publications

Archives of Foundry Engineering

Archives of Foundry Engineering

Experimental investigation of vibration damping capabilities of 3D printed metal/polymer composite sleeve bearings

Effects of porosity, profile of thickness, and angular acceleration on the magneto-electro-elastic behavior of a porous FGMEE rotating disc placed in a constant magnetic field

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