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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Groh, Rainer Mj
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (45/45 displayed)
- 2024Quantifying efficient shape-shiftingcitations
- 2024Dataset for computational and experimental buckling analysis of constant-stiffness and variable-stiffness composite cylinders
- 2023Local Analysis-Test Correlation of Tow-Steered Composite Shells with Small Cutouts
- 2023Increasing reliability of axially compressed cylinders through stiffness tailoring and optimizationcitations
- 2022Probing the stability landscape of prestressed stayed columns susceptible to mode interactioncitations
- 2021Optimization of imperfection-insensitive continuous tow sheared rocket launch structurescitations
- 2021Design of Shape-Adaptive Deployable Slat-Cove Filler for Airframe Noise Reductioncitations
- 2021Manufacture and buckling test of a variable-stiffness, variable-thickness composite cylinder under axial compressioncitations
- 2021Flexural analysis of laminated beams using zigzag theory and a mixed inverse differential quadrature method
- 2020Imperfection-Insensitive Continuous Tow-Sheared Cylinderscitations
- 2020A strain-displacement mixed formulation based on the modified couple stress theory for the flexural behaviour of laminated beams.citations
- 2020An efficient semi-analytical framework to tailor snap-through loads in bistable variable stiffness laminatescitations
- 2020Newton’s method for experimental path-following of nonlinear structures
- 2020Imperfection-Insensitive Continuous Tow Sheared Cylinder
- 2019Efficient 3D Stress Capture of Variable-Stiffness and Sandwich Beam Structurescitations
- 2019A strain-displacement variational formulation for laminated composite beams based on the modified couple stress theory
- 2019Happy Catastrophecitations
- 2019On the accuracy of localised 3D stress fields in tow-steered laminated composite structurescitations
- 2018A tailored nonlinear slat-cove filler for airframe noise reduction.
- 2018Generalised path-following for well-behaved nonlinear structurescitations
- 2018Design and testing of a passively adaptive inletcitations
- 2018Three-dimensional stress analysis for laminated composite and sandwich structurescitations
- 2018Extreme mechanics in laminated shellscitations
- 2018HCI meets Material Sciencecitations
- 2017Post-buckling analysis of variable-angle tow composite plates using Koiter's approach and the finite element methodcitations
- 2017Computationally efficient beam elements for accurate stresses in sandwich laminates and laminated composites with delaminationscitations
- 2017Investigation of failure initiation in curved composite laminates using a higher-order beam modelcitations
- 2017Adaptive air inlet for fluid flow control
- 2016Deleterious localised stress fieldscitations
- 2016Morphing structures for flow regulation
- 2016A computationally efficient 2D model for inherently equilibrated 3D stress predictions in heterogeneous laminated plates. Part Icitations
- 2016Adaptive Nonlinear Structures for Flow Regulation
- 2016Higher-order beam model for stress predictions in curved beams made from anisotropic materialscitations
- 2016A computationally efficient 2D model for inherently equilibrated 3D stress predictions in heterogeneous laminated plates. Part IIcitations
- 2016Mixed shell element for static and buckling analysis of variable angle tow composite platescitations
- 2016Koiter asymptotic analysis of Variable Angle Tow composite plates
- 2015Application of the Refined Zigzag Theory to the Modeling of Delaminations in Laminated Composites
- 2015Static inconsistencies in certain axiomatic higher-order shear deformation theories for beams, plates and shellscitations
- 2015A mixed-variational, higher-order zig-zag theory for highly heterogeneous layered structures
- 2015Mass Optimisation of Variable Angle Tow, Variable Thickness Panels with Static Failure and Buckling Constraintscitations
- 2015Full-field stress tailoring of composite laminates
- 2015On displacement-based and mixed-variational equivalent single layer theories for modelling highly heterogeneous laminated beamscitations
- 2014Buckling analysis of variable angle tow, variable thickness panels with transverse shear effectscitations
- 2014Post-buckling analysis of variable angle, variable thickness panels manufactured by Continuous Tow Shearing
- 2013Buckling analysis of variable angle tow, variable thickness panels with transverse shear effects
Places of action
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article
A strain-displacement mixed formulation based on the modified couple stress theory for the flexural behaviour of laminated beams.
Abstract
A novel strain-displacement variational formulation for the flexural behaviour of laminated composite beams is presented, which accurately predicts three-dimensional stresses, yet is computationally more efficient than 3D finite element models. A global third-order and layer-wise zigzag profile is assumed for the axial deformation field to account for the effect of both stress-channelling and stress localisation. The axial and couple stresses are evaluated from the displacement field, while the transverse shear and transverse normal stresses are computed by the interlaminarcontinuous equilibrium conditions within the framework of the modified couple stress theory. Then, axial and transverse force equilibrium conditions are imposed via two Lagrange multipliers, which correspond to the axial and transverse displacements. Using this mixed variational approach, both displacements and strains are treated as unknown quantities, resulting in more functional freedom to minimise the total strain energy. The differential quadrature method is used to solve the resulting governing and boundary equations for simply-supported and clamped laminated beams. For the simply-supported case, numerical results from this variational formulation agree well with those from a Hellinger-Reissner stress-displacement mixed model found in the literature and the 3D elasticity solution given by Pagano. For the clamped laminate, the additional curvature associated with the couple stress is important to accurately predict localised stresses near clamped ends, which is confirmed by a high-fidelity 3D finite element model.