Experimental and numerical investigation of static and free vibration responses of woven glass/epoxy laminated composite plate

Sahoo, Subhendu Kumar; Panda, Sidhartha; Singh, Vijay Kumar

doi:10.1177/1464420715600191

Cited by 18 publications

(12 citation statements)

References 29 publications

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“…Sahoo et al. 16 analyzed the vibration of woven laminated composite plate numerically using the FEM. Mirtalai and Hajabasi 17 analyzed vibration of thin annular sector plate by employing the DQM.…”

Section: Introductionmentioning

confidence: 99%

Buckling and free vibration characteristics of embedded inhomogeneous functionally graded elliptical plate in hygrothermal environment

Singh

Azam

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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In the present work, effect of hygrothermal environment on vibration and buckling behavior of embedded functionally graded elliptical plate under uniform in plane compression is studied. The properties of elliptical plate vary in transverse direction following power law. The functionally graded elliptical plate is considered to be resting on the Winkler–Pasternak elastic foundation. The governing equations are derived using the principle of virtual work and solved by employing the Rayleigh–Ritz method. The algebraic polynomials are employed to satisfy the different boundary constraints. The advantage of the presented mathematical model over the previously reported methods is that it eliminates the constraints regarding edge conditions, and it is simple and computationally fast. The inclusive results depicting the effect of various parameters namely, material property exponents, foundation parameters, aspect ratio on mechanical and thermomechanical buckling, and natural frequency of embedded functionally graded elliptical plate in a hygrothermal environment are reported after the test of convergence and extensive comparisons. The study shows that increase in foundation moduli lead to an increase in natural frequency and buckling parameter. Furthermore, it is noticed that the temperature and moisture concentration remarkably affect the buckling and vibration behavior of functionally graded elliptical plate.

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Section: Introductionmentioning

confidence: 99%

Buckling and free vibration characteristics of embedded inhomogeneous functionally graded elliptical plate in hygrothermal environment

Singh

Azam

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…Fiber-reinforced composites (FRCs) are the materials of choice in these applications because of their high strength-to-weight and stiffness-to-weight ratios. 1,2 Additionally, the directional nature of the fibers can be exploited to tailor their dynamic behavior. In cases where excitation loads are large, excessive vibration can lead to unwanted noise levels and fatigue failure.…”

Section: Introductionmentioning

confidence: 99%

Random vibration analysis and modal energy characteristics of fiber-reinforced composite beams

Bachoo

Bridge

2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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In aerospace and automotive industries, structural designs are required to meet specific weight limits whilst maintaining strength and stiffness. The material of choice for such applications is fiber-reinforced composites because of their high strength-to-weight and stiffness-to-weight ratios. Composite materials used in these applications are often subjected to random dynamic loads and if the excitation sources are large enough, excessive vibration can lead to unwanted noise levels and fatigue failure. A commonly used design tool for modeling the vibration transmission and power flow in structures excited by random forces is statistical energy analysis. In order to incorporate fiber-reinforced composites within a statistical energy analysis methodology, a detailed understanding of how the modal energy levels vary when excited by a broadband random excitation source is needed. In this paper, analytical expressions are derived for the modal energy levels of a fiber-reinforced composite beam coupled in bending and torsion subjected to spatial white noise or the so-called rain-on-the-roof loading. It is shown that the modal energy levels of the fiber-reinforced composite beam are markedly nonuniform across the modal spectrum. This finding is in contrast with the well-known classical result that an isotropic beam subjected to the same type of excitation is characterized by a uniform modal energy spectrum, a result sometimes referred to as the equipartition of energy. The equipartition of energy forms the basis of statistical energy analysis and the results of this work indicate that fiber-reinforced composite beams cannot be reliably included into a conventional statistical energy analysis methodology. It is also shown that the mechanism responsible for the nonuniform modal energy distribution is related to the physical process by which power is transmitted across the boundaries. Simulations are also carried out to illustrate that the distribution characteristics of the modal energy are identical for a range of classical boundary conditions.

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“…With the development of materials science, new glass fiber-reinforced plastics (hereinafter referred to as the "composite"), thanks to their good insulation properties and mechanical properties, have gradually become a substitute material to solve the problem of weak seismic performance of porcelain electrical equipment. In recent years, domestic and foreign scholars have carried out corresponding research on the mechanical properties and seismic performance of composite electrical equipment [11][12][13][14][15][16][17][18][19][20][21][22][23][24]. e representative research is the research on the seismic performance of ±800 kV composite insulators conducted by Cheng et al [12] through the earthquake simulation shaking table test, during which the displacement, strain, and acceleration responses of key parts of the equipment are obtained, and the comparative analysis was conducted for seismic response of the pillar insulators with and without the brackets.…”

Section: Introductionmentioning

confidence: 99%

Research on Bending Rigidity at Flange Connections of UHV Composite Electrical Equipment

Wang

Cheng

Lü

et al. 2020

Shock and Vibration

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Pillar electrical equipment is an important part of substations. The application of composite materials in pillar equipment can facilitate the improvement of the seismic performance of electrical equipment. In this paper, the test of elastic modulus and bending rigidity was conducted for individual composite elements in insulators and arresters, and the calculation formula for bending rigidity at the composite flange cementing connections was put forward. The numerical simulation model for the earthquake simulation shaking table test of ±1,100 kV composite pillar insulators was established, in which the bending rigidity value for the flange cementing part was obtained by the test or calculation formula. The numerical simulation results were compared with the earthquake simulation shaking table test results, the dynamic characteristics and seismic response of the model were compared, respectively, the validity of the proposed calculation formula for flange bending rigidity of composite cementing parts was verified, and a convenient and effective means was provided for calculating the seismic performance of composite electrical equipment.

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Experimental and numerical investigation of static and free vibration responses of woven glass/epoxy laminated composite plate

Cited by 18 publications

References 29 publications

Buckling and free vibration characteristics of embedded inhomogeneous functionally graded elliptical plate in hygrothermal environment

Buckling and free vibration characteristics of embedded inhomogeneous functionally graded elliptical plate in hygrothermal environment

Random vibration analysis and modal energy characteristics of fiber-reinforced composite beams

Research on Bending Rigidity at Flange Connections of UHV Composite Electrical Equipment

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