Families of hybrid multi-coupled laminates with extension-twisting coupling

Li, Daokui; Cui, Da; Zhou, Shiming

doi:10.1016/j.compstruct.2021.114543

Cited by 1 publication

(1 citation statement)

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“…Since, much of the laminate couplings exist in asymmetric laminate configurations, there is a tendency to warp under thermal and moisture changes. Therefore, research has focused on optimizing hygrothermally stable laminate configurations to maximize the coupling effects [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Tailoring the extension-bending-twisting coupling in composite laminates using carbon nanotube hybridization

Bedi,

Padhee,

Agnihotri

2024

Modelling Simul. Mater. Sci. Eng.

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The existence of extension-bend-twist (EBT) coupling of deformations in composites is a complex problem. Ability to tailor the coupling response as per the requirement is desirable to harness the high strength-to-weight ratio of composites in many structural applications. Here we report a feasible design strategy to tune the extent of deformation coupling in composite laminates. To this end, carbon nanotube (CNT) grafted lamina is incorporated in the lay-up of conventional composites. Classical laminate theory (CLT) and finite element (FE) analysis show that the coupling extent of extension-twist, extension-bending and extension-bending-twist can be suitably designed by varying the number, location and distribution of CNT grafted lamina in a laminate configuration. Theoretical and computational results reveal maximum extension-twist coupling when a single CNT grafted lamina is placed closer to the mid-plane in a 16 ply antisymmetric laminate. Symmetrical placement of CNT grafted lamina avoids the extension-bend coupling. FE analysis shows that the lateral bending of composite cantilever beam under combined axial and bending loads can be designed by suitably choosing the configuration of the modified laminate. These findings will significantly contribute in designing structural composites for advanced applications.

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Section: Introductionmentioning

confidence: 99%