Dynamic behavior of temperature-dependent FG-CNTRC sandwich conical shell under low-velocity impact

Singha, Tripuresh Deb; Bandyopadhyay, Tanmoy; Karmakar, Amit

doi:10.1080/15376494.2021.1980930

Cited by 9 publications

(3 citation statements)

References 55 publications

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“…A layerwise-finite element approach based on the two-dimensional elasticity theory is employed, 11 to reveal the dynamic responses of curved sandwich beams with FG-CNTRC face sheets and porous core subjected to low velocity impactor. Singha et al 12 applied the finite element analysis method based on HSDT to study low-velocity impact behavior of pre-twisted sandwich conical shell panels with FG-CNTRC facings. On account of the Eshelby-Mori-Tanaka way and HSDT, LVI model of FG-CNTRC plates is constructed by Ebrahimi and Habibi 13 and solved by the finite element method (FEM) with 15 freedom degrees at each point.…”

Section: Introductionmentioning

confidence: 99%

Symmetric SPH modeling of functionally graded nanocomposite plates subjected to low‐velocity impact

Li,

Lin,

Naceur

et al. 2023

Polymer Composites

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Functionally graded (FG) composites reinforced by carbon nanotubes (CNTs) have received extensive attention due to their excellent mechanical properties. The impact responses of FG‐CNT nanocomposites are analyzed by the developed meshless method. The temperature‐dependent material properties are expressed by way of the extended rule of mixture. The kinematics of the composite plate is established on the basis of the first‐order shear deformation theory. The modified Hertzian contact law is adopted to evaluate the impact loading between the plate and the impactor. The dynamic balance equations of the plate are constructed and computed by the Systemic Smoothed Particle Hydrodynamics (SSPH) method with strengthened prediction ability. The impacting behaviors of the FG‐CNT nanocomposite plate, as well as the parametric effects, are analyzed by the developed model and the suitability is clearly demonstrated.Highlights Impact of FG‐CNTRC is firstly solved by a self‐developed meshless SPH model. Strong capacity of the SPH impact model is clearly demonstrated. More CNTs close to the strike face would improve the impact resistance.

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Section: Introductionmentioning

confidence: 99%

Symmetric SPH modeling of functionally graded nanocomposite plates subjected to low‐velocity impact

Li,

Lin,

Naceur

et al. 2023

Polymer Composites

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show abstract

“…Feli and Rashidi 22 proposed a three-degree freedom mass-spring model for simulation of the impact on nano-reinforced sandwich targets. Singha et al 23 presented a finite element model based on higher-order shear deformation theory to study the low-velocity impact behavior of pre-twisted sandwich conical shell panels having functionally graded carbon nanotubes-reinforced composite facings. Reis et al 24 fabricated sandwich composite specimens of glass fiber/epoxy resin and the core of balsa wood.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of the impact performance of nano reinforced sandwich structures to the material and geometrical variations

Tofighi

Biglari

Shokrieh

2022

Journal of Composite Materials

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The low-velocity impact response of sandwich structures with aluminum face sheets and neat or nano-reinforced polypropylene core was studied. A strain-rate dependent micromechanics model (SRDM) was presented in the literature for predicting the dynamic behavior of nano-reinforced polymers. In the present study, the dynamic behavior of nano-reinforced polypropylene was simulated based on SRDM results. The finite element model was validated against the experimental results. It was shown that the results of the simulation performed by the SRDM model were in very good agreement with the experimental data. Then, the proposed finite element model was used for checking the sensitivity of the impact performance of nano-reinforced sandwich structures to the material and geometrical variations. A special sandwich structure with a core of 1 mm thickness and a face thickness of 1 mm was considered as the base structure. Different material and geometrical variations including doubling the thickness of the core or face sheets, a different weight ratio of graphene, and increasing material parameters of the face sheets up to 90%, were undertaken on the base structure. The results of the present study imply that the optimal amount of graphene should not exceed 0.5 wt.% to improve impact properties. The impact response of nano-reinforced sandwich structures was more sensitive to the variations of the face thickness in comparison to the variations of the core thickness. Moreover, the impact outputs were more sensitive to changes in the yield stress of faces compared to changes in Young’s modulus of faces.

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“…The FE formulation was developed on the basis of the kinematics condition of FSDT to model the pre-twisted conical shell. Singha et al 71 explored the LVI responses of pre-twisted sandwich conical shells with FG-CNTRC face sheets and homogenous core in thermal environments using FEM in conjunction with HSDT. The LVI responses of FG-CNTRC sandwich conical shell have been shown to be significantly influenced by CNTs grading pattern, CNTs volume fraction, core-to-facing thickness ratio, and other geometrical and dynamical parameters.…”

Section: Introductionmentioning

confidence: 99%

Transient response of pre-twisted FG-GRC sandwich conical shell subjected to low-velocity impact in thermal environment

Singha

Bandyopadhyay

Karmakar

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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A finite element method-based dynamic analysis of pre-twisted sandwich conical shell panel having functionally graded graphene-reinforced composite (FG-GRC) facings and homogenous core without or with pores under low-velocity impact in thermal environments is performed utilizing a higher-order shear deformation theory (HSDT). In each facing, the graphene sheets are either uniformly dispersed or layer-wise functionally graded across its thickness. The extended Halpin-Tsai model is employed to estimate the temperature-dependent elastic properties of the nanocomposite facings. The contact force induced between the impactor and target panel is computed through the modified Hertzian contact law. The equations of motion of the FG-GRC sandwich conical shell panel are formulated based on Lagrange’s equation. The solutions of the resulting equations of motion are obtained employing Newmark’s time integration scheme. After verifying the consistency and accurateness of the present method, the effects of some critical parameters like graphene grading profile, temperature, core-to-facings thickness ratio, pre-twist angle, span-to-cone length ratio, impactor’s initial velocity, impactor’s size, and porosity coefficient on the impact response of the pre-twisted FG-GRC sandwich conical shell panel in uniform thermal environments are scrutinized.

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Dynamic behavior of temperature-dependent FG-CNTRC sandwich conical shell under low-velocity impact

Cited by 9 publications

References 55 publications

Symmetric SPH modeling of functionally graded nanocomposite plates subjected to low‐velocity impact

Symmetric SPH modeling of functionally graded nanocomposite plates subjected to low‐velocity impact

Sensitivity of the impact performance of nano reinforced sandwich structures to the material and geometrical variations

Transient response of pre-twisted FG-GRC sandwich conical shell subjected to low-velocity impact in thermal environment

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