Abstract
AbstractNonlinear flexural analysis of sandwich composite beam with multiwall carbon nanotube (MWCNT) reinforced composite face sheet and bottom sheet under the thermo-mechanically induced loading using finite element method is carried out. Solution of current bending analysis is performed using Newton’s Raphson approach by using higher order shear deformation theory (HSDT) and non-linearity with Von Kármán kinematics. The sandwich laminated composite beam is subjected to uniform, linear and nonlinear varying temperature distribution through thickness of the beam. The sandwich beam with MWCNT reinforced composite facesheet and bottom sheet is subjected to point, uniformly distributed (UDL), hydrostatic and sinusoidal loading. The two phase matrix is utilized with E-Glass fiber to form three phase composite face sheet and bottom sheet by Halpin-Tsai model. The static bending analysis is performed for evaluating the transverse central deflection of three and five layered sandwich composite beam. Transverse central deflection is measured by varying CNT volume fraction, uniformly distributed, linearly and nonlinear varying temperature distribution, thickness ratio, boundary condition, number of walls of carbon nanotube by using interactive MATLAB code.
Highlights
Instead of metallic counterparts, laminated composites are intensively used in various commercial and household applications because of superior mechanical and thermal properties
Among the clamp-clamp supported (CC), clamped-free supported (CF), clamped- supported (CS), hinged- supported (HS) and supported (SS) boundary condition, minimum transverse central deflection for laminated sandwich composite beam is observed at CC supported condition due to more number of constraints in provided boundary condition
As compared to CF, about 50% less deflection is observed in case of CC support condition
Summary
Instead of metallic counterparts, laminated composites are intensively used in various commercial and household applications because of superior mechanical and thermal properties. Effective utilization of Halpin-Tsai approach for the material property evaluation of composite material with CNT reinforcement done in Bhardwaj et al [32] It presented a nonlinear flexural response using Chebyshev polynomials. The nonlinear composite plate analysis was carried out under the action of uniformly distributed load assuming temperature-dependent material properties. It is observed that researchers tried to increase the strength and stiffness of composite structure with sandwiching the core material between the skins by the application of various loading for optimum performance. Very little work available related to bending analysis over the sandwich composite with face sheet and bottom sheet is of carbon nanotube-reinforced composite with various lamination scheme without considering the effect of linear, nonlinear and uniformly distributed temperature distribution. For the present study SWCNT/MWCNT reinforced sandwich composite beam is utilized for the bending analysis under the thermo-mechanical effect. 2.2 Material properties of carbon nanotube reinforced composite by Halpin-Tsai model
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