Modelling of laminates using a layerwise element with enhanced strains

Moorthy, C. M. Dakshina; Reddy, J. N.

doi:10.1002/(sici)1097-0207(19981030)43:4<755::aid-nme449>3.0.co;2-n

Cited by 19 publications

(2 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Layerwise models, in which each layer is considered as an independent plate, have therefore been proposed to improve the local stress representation [19][20][21][22][23][24]. Layerwise models have been proved to a very good alternative to 3D models since interpolation choices along the z-direction take into account the specificities of the laminate.…”

Section: Introductionmentioning

confidence: 99%

Mesh-adapted stress analysis of multilayered plates using a layerwise model

Salha

Bleyer

Sab

et al. 2020

Adv. Model. and Simul. in Eng. Sci.

View full text Add to dashboard Cite

This paper proposes a new finite-element modelling of a recent layerwise model for multilayered plates. This layerwise model is built from a specific 3D stress-field expansion along the thickness direction and involves, in particular, interlaminar transverse shear and out-of-plane stresses as generalized stresses. Its main feature is that 3D equilibrium equations and free-edge boundary conditions are directly taken into account into the stress-based construction of the model. A dual displacement-based finite-element discretization is implemented using the FEniCS software package and a remeshing strategy is proposed based on a novel error indicator. The error indicator is built based on the 3D stress field directly deduced from the layerwise generalized stresses and compared to a reconstructed stress field based on the model generalized displacements. The proposed error indicator is shown to identify the most critical parts of a laminate structure associated with complex 3D stress fields such as boundaries or stress concentration/singularity regions (near free-edges or delamination fronts). Through the combination of thickness discretization and in-plane mesh refinement in regions of interest, the proposed framework therefore offers an attractive alternative to 3D solid finite elements for an accurate prediction of stress states in composite laminates.

show abstract

Section: Introductionmentioning

confidence: 99%

Mesh-adapted stress analysis of multilayered plates using a layerwise model

Salha

Bleyer

Sab

et al. 2020

Adv. Model. and Simul. in Eng. Sci.

View full text Add to dashboard Cite

show abstract

“…Moorthy and Reddy [22,23] indicates the advantages of using layerwise theories in modeling delamination. However, most layerwise theories assume that interconnections between layers are perfect.…”

Section: Introductionmentioning

confidence: 99%