Predicting the nonlinear response and progressive failure of composite laminates under triaxial loading: Correlation with experimental results

Bogetti, Travis A.; Staniszewski, Jeffrey M.; Burns, Bruce P.; Hoppel, Christopher P.; Gillespie, John W.; Tierney, John

doi:10.1177/0021998312462616

Cited by 13 publications

(13 citation statements)

References 19 publications

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“…Differences between analysis and test results were explained by deficiencies with respect to matrix-dominant failure. The maximum strain criterion in conjunction with plasticity used by Bogetti et al [20,21] delivered good results in the WWFE-I; the strengthening effect that appears under tri-axial loading or hydrostatic pressure, however, is obviously not well captured as has been admitted by Bogetti et al [22]. Furthermore, Bogetti's theory predicts a completely closed failure envelope even for isotropic materials.…”

Section: Fig 2 Maximum Stressmentioning

confidence: 96%

Models for Intralaminar Damage and Failure of Fiber Composites - A Review

Rohwer

2016

FU Mech Eng

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In order to fully exploit the potential of structures made from fiber composites, designers need to know how damage occurs and develops and under what conditions the structure finally fails. Anisotropy and inhomogeneity cause a rather complex process of damage development which may be one reason for an exceptionally large number of existing models. This paper intends to provide an overview over those models and give some hints about current developments. As such it is an updated version of a recent publication [1]. The survey is limited to laminates from unidirectional layers out of straight continuous fiber polymer composites under quasi-static loading. Furthermore, focus is laid on intralaminar damage.Many failure models smear out the inhomogeneity between fibers and the matrix. Simply limiting each stress component separately can lead to surprisingly good results as documented in the first World-Wide Failure Exercise. Interpolation criteria consider mutual influence of normal and shear stresses, predominantly through a quadratic failure condition. Traditionally one distinguishes between interpolation criteria and physically based ones. As an important physical effect the difference between fiber failure and inter-fiber failure is considered. Furthermore, stress invariants are taken as a basis, increased shear strength under compression is accounted for, and characteristic failure modes are captured. Fibers and the matrix material are characterized by a large disparity in stiffness and strength. Micromechanical models consider this inhomogeneity but suffer from the difficulty to determine relevant material properties. Compressive strength in fiber direction has attracted special attention. However, the role of kink band formation, which is observed in the failure process, seems to be not yet fully understood.In summary it must be concluded that despite the tremendous effort which has been put into the model development the damage and failure simulation of fiber composites are not in a fully satisfying state. That is partly due to lack of accurate and reliable test results.

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Section: Fig 2 Maximum Stressmentioning

confidence: 96%

Models for Intralaminar Damage and Failure of Fiber Composites - A Review

Rohwer

2016

FU Mech Eng

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“…Comparisons with the experimental data will be made and published for Part B of WWFE-II. 32 One of the limitations of the present approach, based on maximum strain failure criterion, is that it may not be able to predict and model growth/propagation of damage in composite laminates, due to its limited post failure capability. Currently, there is a huge amount of effort being put in by the community to develop fracture mechanics based models (for example, cohesive zone models) for such cases.…”

Section: Discussionmentioning

confidence: 99%

Predicting the nonlinear response and progressive failure of composite laminates under tri-axial loading

Bogetti

Staniszewski

Burns

et al. 2012

Journal of Composite Materials

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As a part of the Second World-Wide Failure Exercise, a three-dimensional nonlinear maximum progressive strain model, based on laminate analysis, is employed to make blind predictions for 12 test cases representing failure envelopes and stress strain curves for isotropic, unidirectional, and multidirectional composite laminates. This approach allows for redistribution of ply stresses and differentiation of the various potential modes of failure. These cases include initial and final ply failure envelopes under tri-axial loading, as well as 3 cases, requiring nonlinear stress-strain analysis. Comparison of predictions with actual experimental data will be made in Part B of the Second World-Wide Failure Exercise.

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“…Differences between analysis and test results are explained by deficiencies with respect to matrix-dominant failure. The maximum strain criterion in conjunction with plasticity used by Bogetti et al 24,25 delivered good results in the WWFE-I; the strengthening effect that appears under tri-axial loading or hydrostatic pressure, however, is obviously not well captured as has been admitted by Bogetti et al 26 Furthermore, Bogetti's theory predicts a completely closed failure envelope even for isotropic materials. Nahas 1 has referred to further non-interactive theories which to some degree account for the strength of the constituents.…”

Section: Fiber Compositementioning

confidence: 97%

Predicting fiber composite damage and failure

Rohwer¹

2014

Journal of Composite Materials

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Considerable effort has been put into the development of models describing damage and failure of fiber composites. This paper aims at providing an overview of models for intralaminate fracture of continuous fiber-reinforced polymer composites under quasi-static load. The models are grouped into homogeneous ones, those with some effect of inhomogeneity between fibers and the matrix, and fully inhomogeneous ones. Even a world-wide competition was not able to decide for the one and only homogeneous model. Accounting for the inhomogeneity between fibers and the matrix allows being more close to the real behavior on the account of higher computational effort. They suffer, however, from the difficulty to gather reliable material data. In summary, it must be concluded that a fully satisfying solution is not yet available. Consequently, for the time being, a real test remains the authentic way to secure structural strength.

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Predicting the nonlinear response and progressive failure of composite laminates under triaxial loading: Correlation with experimental results

Cited by 13 publications

References 19 publications

Models for Intralaminar Damage and Failure of Fiber Composites - A Review

Models for Intralaminar Damage and Failure of Fiber Composites - A Review

Predicting the nonlinear response and progressive failure of composite laminates under tri-axial loading

Predicting fiber composite damage and failure

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