Vibration Analysis of Carbon Fiber Reinforced Laminated Composite Skin with Glass Honeycomb Sandwich Beam Using HSDT

Abstract

In this paper, the vibration analysis of uniform laminated composite sandwich beam with a viscoelastic core was studied. The governing equation of motion of the laminated composite sandwich beam has been derived based on higher order shear deformation theory (HSDT) in finite element model (FEM IntroductionNowadays the demand for the sandwich structure is getting increased because of its high stiffness to the low weight ratio. It is also paved the attention of the researchers and scientist towards the sandwich structures. A Sandwich structure finds its place in wide range of applications because of its high stiffness and flexural rigidity especially in marine, aerospace and astronautics. Ibrahim Ozkol and AytacArikoglu [1] were made an investigation on vibration analysis of the uniform laminated composite sandwich beams with viscoelastic core using differential transform method. The governing equation of motion of sandwich beamwas formulated by Hamilton's principle and it was solved by differential transform method (DTM), Eigen value analysis method was used to generate and evaluate frequencies. Banerjee et al. [3] investigated the vibration characteristics of the viscoelastic material based asymmetric sandwich beam by using the dynamic stiffness model which was developed from the Timoshenko beam theory. Manoharan et al. [4] presented the finite element formulation of the magnetorheological (MR) fluid based sandwich beam. The governing equation of motion sandwich beam was formulated using finite element method. In this study it was concluded that the natural frequencies increased by increasing the intensity of the magnetic field irrespective to the boundary conditions. Allahverdizadeh et al. [5] was studied the dynamic behaviour of adaptive sandwich beams, where the middle layer as electro-rheological fluid (ERF) and constraining layers were fabricated by functionally graded materials (FGM). This study shows that the resonant frequencies and the amplitude of peak values have been decreased by increasing the thickness FGM at constant electric filed. From the results it was indicated that at a definite applied electric field, the Clamped-Clamped beam showed the higher resonant frequencies and the cantilever beam showed the least value among all end conditions. Xu and Qiu [6] studied the free vibration analysis and optimization method of composite lattice truss core sandwich beams. The partial differential governing equation of motion was developed by adopting the Hamilton principle which was based on Thimosenko and bernoullis beam theory and then the natural frequencies of the

Free vibration characteristics of multi-core sandwich composite beams: Experimental and numerical investigation

“…The increase in stiffness is more significant than the increase in the mass of the sandwich beam. A similar effect is also seen in Subramani et al 14

Figure 6.Influence of using different core thickness on the natural frequency of the multi-core L-R-L-R-L sandwich beam under clamped–clamped and clamped free condition.

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“…The increase in stiffness is more significant than the increase in the mass of the sandwich beam. A similar effect is also seen in Subramani et al 14 Further, the influence of the ply angle orientations on the stiffness of the various patterns of the multi-core sandwich beams are investigated under different end conditions. The structural stiffness of the multi-core sandwich beam with different ply angle orientations such as [0/0/0/0], [0/45/45/0], and [90/90/90/90] are analyzed under CC, CF, and SS conditions, and the outcomes are shown in Table 5.…”

“…Validation of natural frequencies of present model under different end condition with Subramani et al14 …”

Hybrid Sandwich Panels: A Review

“…The effects of geometrical parameters, material properties, elastic Winkler and Pasternak foundations, mechanical, blast and damping loads on the nonlinear dynamic response and the natural frequencies of sandwich composite cylindrical panels are studied. Mageshwaran Subramani et al [97] studied the vibration analysis of uniform laminated composite sandwich beam with a viscoelastic core. The governing equation of motion of the laminated composite sandwich beam has been derived based on higher order shear deformation theory (HSDT) in finite element model (FEM).…”

Effects of Injection Molding Screw Tips on Polymer Mixing

“…It is essential to achieve correct and even colour during the manufacturing process to make marketable products. It is important not only in the case of injection molding but in the case of biomaterials [1], 3D printing [2][3], composites [4] and extrusion, too. The quality of color homogeneity depends on several factors, such as the chemical composition of the raw material and colorants, the processing parameters and the machine as well.…”