Computational and experimental investigation of delamination in L-shaped laminated composite components

Wimmer, G.; Kitzmüller, W.; Pinter, Gerald; Wettemann, T.; Pettermann, H.E.

doi:10.1016/j.engfracmech.2009.06.007

Cited by 45 publications

(25 citation statements)

References 15 publications

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“…Unfortunately they do not provide an experimental validation of their model. Wimmer et al [158] did compare the predictions for quasi-static loading generated by the model proposed in reference [157] with experimental values. The correspondence between the predicted and experimental behaviour was not very good however.…”

Section: Other Approachesmentioning

confidence: 99%

Methods for the prediction of fatigue delamination growth in composites and adhesive bonds – A critical review

Pascoe

Alderliesten

Benedictus

2013

Engineering Fracture Mechanics

228

152

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An overview is given of the development of methods for the prediction of fatigue driven delamination growth over the past 40 years. Four categories of methods are identified: stress/strain-based models, fracture mechanics based models, cohesive-zone models, and models using the extended finite element method. It is highlighted that most models are phenomenological, based on the observed macro-scale behaviour of test specimens. It is suggested that a more physics based approach, focusing on elucidating the mechanisms involved, is needed to come to a full understanding of the problem of delamination growth.

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Section: Other Approachesmentioning

confidence: 99%

Methods for the prediction of fatigue delamination growth in composites and adhesive bonds – A critical review

Pascoe

Alderliesten

Benedictus

2013

Engineering Fracture Mechanics

228

152

View full text Add to dashboard Cite

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“…However, one has to consider, that the through-thickness strengths in laminated shells are also small since they normally lack a proper reinforcement in thickness direction [3,4]. As a result, delamination is a common failure mode to these structures [1,5]. Delamination might endanger structural integrity, e.g.…”

Section: Introductionmentioning

confidence: 97%

“…Despite their widespread use however, failure behavior is not yet understood completely [1]. Nevertheless, composites laminates are increasingly often used even for complex, heavily loaded structures, resulting in designs which frequently feature curved and moderately thick walled laminates.…”

Section: Introductionmentioning

confidence: 99%

Error estimation between simple, closed-form analytical formulae and full-scale FEM for interlaminar stress prediction in curved laminates

Most

Petry

2015

Composite Structures

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“…In areas of high curvature, as for example in T-shaped stringers of aircraft wings, interlaminar stresses are pronounced and can lead to premature delamination failure [1,2]. To mitigate this debonding failure, it is crucial to robustly predict the stress fields in these curved laminated structures [3,4,5].…”

Section: Introductionmentioning

confidence: 99%

Higher-order beam model for stress predictions in curved beams made from anisotropic materials

Thurnherr

Groh

Ermanni

2016

International Journal of Solids and Structures

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A higher-order beam model for analyzing the flexural response of curved multilayered beams with constant curvature and arbitrary constant thickness is developed. The new model is derived from the Hellinger-Reissner mixed variational statement and predicts inherently equilibrated 3D stresses from an equivalent single-layer model. As a starting assumption, the hoop stress is formulated as a series of higher-order stress resultants multiplied by Legendre polynomials. The governing equations are derived in a generalized manner such that the modeling order can be adjusted and is not defined a priori. Hence, the highest order Legendre polynomial determines the modeling order. The through-thickness shear and normal stresses are derived by integrating the generalized hoop stress in Cauchy's polar equilibrium equations. As a result, all stress fields are based on the same set of variables, thereby considerably reducing the computational effort. The three stress fields, and two displacements in the radial and hoop directions are used in the Hellinger-Reissner functional to derive a new set of stress-displacement relations. The enforcement of the classical membrane and bending equilibrium equations of curved beams in the Hellinger-Reissner functional guarantees that all interlaminar and surface traction equilibrium conditions are satisfied exactly. A validation study of a composite laminate using a high-fidelity 3D finite element model shows that the stresses are captured very accurately by the present model, but with much less computational effort than the finite element model. As a result, the developed model can provide rapid and accurate insights into the expected damage onset behavior of curved laminates.

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Computational and experimental investigation of delamination in L-shaped laminated composite components

Cited by 45 publications

References 15 publications

Methods for the prediction of fatigue delamination growth in composites and adhesive bonds – A critical review

Methods for the prediction of fatigue delamination growth in composites and adhesive bonds – A critical review

Error estimation between simple, closed-form analytical formulae and full-scale FEM for interlaminar stress prediction in curved laminates

Higher-order beam model for stress predictions in curved beams made from anisotropic materials

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