Free Vibration Analysis of Curved Sandwich Beams with Face/Core Debond Using Theory and Experiment

Baba, Buket Okutan

doi:10.1080/15376494.2010.528163

Cited by 21 publications

(16 citation statements)

References 14 publications

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“…where U s is the subtended angle of the curved beam. Applying the GDQ method and using equation 21, equations (10) to (14) are discretized in the following form:…”

Section: Generalized Differential Quadrature Methodsmentioning

confidence: 99%

“…Then, the governing partial differential equation system presented in equations (10) to (14) with the BCs in equations (15) to (19) reduces to an eigenproblem of finding the eigenvalues and eigenvectors of resulting ordinary differential equation system.…”

Section: Equation Of Motionmentioning

confidence: 99%

“…Bozhevolnaya and Sun studied the effects of curvature on the frequencies and the coupling between eigenmodes of a curved elastic sandwich beam by using the Galerkin’s method [13]. Baba investigated the effects of face/core debond and curvature on the vibration characteristics of fixed curved sandwich beams by using ABAQUS, a commercial FE software, together with experimental validation [14].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Vibration analysis of curved composite sandwich beams with viscoelastic core by using differential quadrature method

Demir

Balkan

Peker

et al. 2018

Jnl of Sandwich Structures & Materials

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This paper focuses on the vibration analysis of three-layered curved sandwich beams with elastic face layers and viscoelastic core. First, the equations of motion that govern the free vibrations of the curved beams together with the boundary conditions are derived by using the principle of virtual work, in the most general form. Then, these equations are solved by using the generalized differential quadrature method in the frequency domain, for the first time to the best of the authors’ knowledge. Verification of the proposed beam model and the generalized differential quadrature solution is carried out via comparison with the results that already exist in literature and the ANSYS finite element solution combined with the modal strain energy method. The effect of system parameters, i.e. layer thicknesses, the lamination angle of layers and the curvature on the vibration and damping characteristics of a curved sandwich beam with laminated composite face layers and a frequency dependent viscoelastic core is investigated in detail.

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“…where U s is the subtended angle of the curved beam. Applying the GDQ method and using equation 21, equations (10) to (14) are discretized in the following form:…”

Section: Generalized Differential Quadrature Methodsmentioning

confidence: 99%

Section: Equation Of Motionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Vibration analysis of curved composite sandwich beams with viscoelastic core by using differential quadrature method

Demir

Balkan

Peker

et al. 2018

Jnl of Sandwich Structures & Materials

View full text Add to dashboard Cite

show abstract

“…Debonding can also have a significant influence on the vibration behaviours of sandwich structures. The size and location of debonded regions, shape and boundary conditions of the structures and the vibration modes can affect the vibration behaviours of debonded structures [16][17][18]. The natural frequencies of sandwich structures decrease more when the length of the debonded region increases [15,19].…”

Section: Introductionmentioning

confidence: 99%

“…The damping increases as the damage area increases [20]. The curvature of the structures affects the stiffness of the structures and hence results in the change of natural frequencies [17,18]. Large displacement and failure of structures can happen because resonance can be excited at lower natural frequencies more easily when the structures are in service.…”

Section: Introductionmentioning

confidence: 99%

Vibration behaviours of single/multi-debonded curved composite sandwich structures

Tsai

Taylor

2019

Composite Structures

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A review on recent advances in sandwich structures based on polyurethane foam cores

et al. 2020

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Sandwich composites with a polyurethane foam (PUF) core have become a versatile set of materials with applications ranging from basic construction elements to advanced engineering materials. This diverse range of applications has provided these sandwich materials with a distinctive position in today's engineering world. This review focuses on the broad research that has been carried out on PUF core‐based sandwich composites over the years—especially in the last decade. Thorough details have been presented focusing on basic PUF core sandwich structures, advanced PUF core sandwich composites with different kinds of reinforcements and complex structures such as hybrid sandwich panels. All the research presented here has been categorized carefully, such as the types of materials used in various studies, the types of reinforcements and testing techniques used, including mechanical, electrical, dynamic, thermal and acoustic methods etc. Comparisons have also been made based on similar materials, similar testing procedures and similar application areas. Research areas have been highlighted by giving a deep insight into the most promising research, manufacturing techniques and improvement procedures. Major consumption areas and application sectors for PUF core sandwich composites have also been discussed in this review. Finally, conclusions have been made based on the results found from a literature investigation.

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Free Vibration Analysis of Curved Sandwich Beams with Face/Core Debond Using Theory and Experiment

Cited by 21 publications

References 14 publications

Vibration analysis of curved composite sandwich beams with viscoelastic core by using differential quadrature method

Vibration analysis of curved composite sandwich beams with viscoelastic core by using differential quadrature method

Vibration behaviours of single/multi-debonded curved composite sandwich structures

A review on recent advances in sandwich structures based on polyurethane foam cores

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