Dynamics properties of composite sandwich open circular cylindrical shells

Zhai, Yanchun; Chai, Mengjiang; Su, Jianmin; Liang, Shuquan

doi:10.1016/j.compstruct.2018.01.076

Cited by 31 publications

(13 citation statements)

References 35 publications

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“…A refined firstorder shear deformation theory for layered composites and sandwich structure was proposed by Mantari and Ore. 17 The results showed that the proposed theory was more accurate and effective in solving the dynamic characteristics of single-layer and sandwich composite plates than the existing first-order shear deformation theory. Zhai et al [18][19][20] derived the vibration differential equation of composite viscoelastic sandwich plates and shells by shear deformation principle and variational method, and discussed the influence of material structure and properties on their vibration characteristics. Li et al [21][22][23] established the theoretical equation of composite sandwich cylindrical shell and explored its nonlinear dynamic characteristics.…”

Section: Introductionmentioning

confidence: 99%

Free vibration of co‐curing damping sandwich composites with different lay‐up angles

Zheng,

Zhou,

et al. 2023

Polymer Composites

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In this article, the dynamic characteristics of Co‐curing Damping Sandwich Composites with Different Lay‐up Angles (CDSCDLA) are studied by means of modal analysis and numerical simulation to optimize the structure of co‐curing composites. The vibration equilibrium equation of CDSCDLA is derived according to first order shear deformation theory and Hamilton equation. The dynamic model of the structure is established by finite element simulation to verify the accuracy of the theoretical calculation. The influence of different lay‐up angle and the damping film thickness on the free vibration of CDSCDLA is explored under the condition of constant skin thickness. The theoretical derivation and finite element simulation results reveals that the overall dynamic characteristic of damping sandwich composite with a lay‐up angle of 45° is optimal when the damping film thickness is constant. In particular, when the thickness of the damping film is 0.1 mm, the first‐order mode damping and mode frequency of composite plate with a lay‐up angle of 45° reach the maximum value of 0.1495 and 747.9 Hz, respectively. The first order damping loss factor of the CDSCDLA with different layup angles is maximum when the damping film thickness is 0.3 mm. However, blindly increasing the damping layer thickness can not always improve the damping performance of the composite structure, but will greatly reduce the stiffness of the composite. The work provides a reference for dynamic performance optimization and structural design of sandwich plate with high strength and large damping loss factor.Highlights Free vibration of sandwich composites with lay‐up angles is investigated. The dynamic analytical model of the structure is established. The validity of the derived theory is verified by numerical simulation.

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Section: Introductionmentioning

confidence: 99%

Free vibration of co‐curing damping sandwich composites with different lay‐up angles

Zheng,

Zhou,

et al. 2023

Polymer Composites

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“…For the sake of better studying theoretically the characteristics of sandwich structures, since the work of Kerwin, [4] then DiTaranto et al [5] extended Kerwin's research, and subsequently, kinds of theories and solutions were developed, such as, thin shell theories, [6][7][8][9][10] such as Donnel-Mushtari's theory and Reissner-Naghdi's theory; first order shear theory (FOST) [11,12] and high order shear theory. [13][14][15] Meanwhile, various solution methods are developed for studying the vibration and damping properties of these structures, such as, the Navier method, [16,17] differential quadrature method, [18,19] finite element method, [20,21] and Ritz method [22] et al Those theories and solutions have been broadly used to were widely applied to stress analysis, free and forced vibration, bending, buckling, et al [23,24] Based on these theories and solutions, numbers of vibration and damping analyzes of CCSCS have been carried out.…”

Section: Introductionmentioning

confidence: 99%

Vibration characteristics of circular composite sandwich cylindrical shells with soft core

Dong

Yin

et al. 2022

Polymer Composites

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In this article, in order to obtain better vibration characteristics of circular composite sandwich cylindrical shells (CCSCS), the free vibration and damping property of CCSCS has been performed with parameter analysis. First, the equations of motion of CCSCS are deduced by adopting a displacement continuous piece-wise model based on Hamilton's principle and first order shear theory, in which shear strain and rotary inertias of all layers are considered. Second, the exact Navier method is adopted to obtain the solutions of these vibration equations and is authenticated by comparison with the results of open literatures. Finally, the change rule of free vibration and damping property versus thickness, shear parameter, and some structure parameters ratios are presented graphically, then a series of valuable conclusion are proposed to make CCSCS obtain higher rigidity and damping property.

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“…The two-cylindrical-panel system, an important component of modern lightweight structures, is widely used in mechanical, vehicle, and marine structures [ 1 , 2 ]. A two-cylindrical-panel system may possess ideal structural properties, such as better vibration attenuation and lighter weight, than a single cylindrical panel [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Free Vibration Analysis of a Graphene-Platelet-Reinforced, Porous, Two-Cylindrical-Panel System

Sun

Chi

Luo³

2022

Materials

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In this study, a novel, dynamic model of a graphene-platelet-reinforced, porous (GPLRP) double-cylindrical-panel system is proposed. The material properties of a graphene-platelet-reinforced, porous, double-cylindrical-panel system were determined by the Halpin–Tsai micromechanics model and the typical mechanical properties of open-cell metal foams. Different types of porosity distribution and graphene platelet (GPL) distribution patterns were considered. Love’s shell theory was utilized to derive the theoretical formulation, and the Rayleigh–Ritz method was used to calculate the natural frequencies of the system. The proposed model was validated by several comparison studies with the natural frequencies in the existing literature. Finally, the effects of stiffness of Winkler springs, boundary condition, porosity coefficient, porosity distribution, GPL distribution pattern, and GPL weight fraction on the free vibration characteristics of the system were evaluated.

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Dynamics properties of composite sandwich open circular cylindrical shells

Cited by 31 publications

References 35 publications

Free vibration of co‐curing damping sandwich composites with different lay‐up angles

Free vibration of co‐curing damping sandwich composites with different lay‐up angles

Vibration characteristics of circular composite sandwich cylindrical shells with soft core

Free Vibration Analysis of a Graphene-Platelet-Reinforced, Porous, Two-Cylindrical-Panel System

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