Mesh objective implementation of a fibre kinking model for damage growth with friction

Costa, Sérgio; Gutkin, Renaud; Olsson, Robin

doi:10.1016/j.compstruct.2017.02.057

Cited by 25 publications

(6 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Continuum damage based formulations without rate effects are proposed by [12,13], including fibre kinking theory, e.g. [14][15][16][17]. Other authors [18][19][20] used a functional formulation of the generalized Maxwell model introduced by Simo and Hughes [21] to model the behaviour of composites at high strain rates.…”

Section: Introductionmentioning

confidence: 99%

A micromechanics based model for rate dependent compression loaded unidirectional composites

Singh

Larsson²,

Olsson³

et al. 2023

Composites Science and Technology

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

A micromechanics based model for rate dependent compression loaded unidirectional composites

Singh

Larsson²,

Olsson³

et al. 2023

Composites Science and Technology

Self Cite

View full text Add to dashboard Cite

“…This supports the development of intralaminar models for longitudinal compression progressive failure with experimental input. 17,18 The proposed novel trigger, named triangular through-thickness (TTT) trigger, is compared to the traditional bevel trigger for longitudinal and for transverse crushing of UD carbon/epoxy NCF-reinforced composites. Information on the specimen crushing behaviour is obtained from video recordings and microscopic inspection and is discussed together with the test set-up.…”

Section: Introductionmentioning

confidence: 99%

Development of a test method for evaluating the crushing behaviour of unidirectional laminates

Bru

Waldenström

Gutkin³

et al. 2017

Journal of Composite Materials

Self Cite

View full text Add to dashboard Cite

More fundamental test methods are needed to assist the development of physically based and truly predictive simulation tools for composite materials under crash conditions. In this paper, a unidirectional flat specimen that can be used to validate the predicted behaviour from a simulation to the physical behaviour in the experiment is developed. A systematic experimental investigation is conducted to evaluate the influence of the trigger geometry on the crushing response by selecting two trigger types and different trigger angles. For longitudinal crushing, the traditional bevel trigger leads to out-of-plane failure by splaying with a limited amount of in-plane fracture, while the proposed trigger achieves a high amount of compressive fragmentation failure. For transverse crushing, the symmetry of the proposed new trigger improves the specimen stability during the crushing process. It is also observed that the weft threads of the unidirectional fabric reinforcement used for the tests have a strong influence on the longitudinal crushing response. The boundary conditions of the test and the information on the specimen failure gleaned from video recordings and microscopic inspections are discussed in order to facilitate a future correlation with modelling results.

show abstract

“…Recently, Costa et al identified this mesh sensitivity as it relates to modeling fiber kinking and recommended two options for ensuring mesh objectivity. 17 In the first method, the strain in the element is decomposed into a kinkband component and an elastic component. In the second method, the strain in the kink band is smeared over the element.…”

Section: Decompositionmentioning

confidence: 99%

“…In the second method, the strain in the kink band is smeared over the element. The method used herein is analogous to the strain decomposition method by Costa et al 17 and follows previous work by Bergan and Leone. 15 When the plastic strain becomes non-negligible the decomposition is performed.…”

Section: Decompositionmentioning

confidence: 99%

“…Likewise, Gutkin, Costa, and Olsson recently introduced a constitutive model based on fiber kinking theory and a physically based constitutive law. [16][17][18] The model includes consideration for fiber misalignments and nonlinear shear stress-strain behavior. The authors demonstrated that the model is capable of predicting the compression strength and crush stress.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Development of a Mesoscale Finite Element Constitutive Model for Fiber Kinking

Bergan

Herráez

González

et al. 2018

2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

View full text Add to dashboard Cite

A mesoscale finite element material model is proposed to analyze structures that fail by the fiber kinking damage mode. To evaluate the assumptions of the mesoscale model, the results were compared with those of a high-fidelity micromechanical model. A direct comparison between the two models shows remarkable correlation, indicating that the key features of the fiber kinking phenomenon are appropriately accounted for in the mesoscale model. The mesoscale model is applied to structural analysis cases to demonstrate the capabilities of the model. A verification study is conducted with an unnotched compression specimen and preliminary validation is demonstrated with a notched compression specimen. The results show that the model is successful at representing the kinematics of fiber kinking while at the same time highlighting the need for further verification and validation.

show abstract

Mesh objective implementation of a fibre kinking model for damage growth with friction

Cited by 25 publications

References 29 publications

A micromechanics based model for rate dependent compression loaded unidirectional composites

A micromechanics based model for rate dependent compression loaded unidirectional composites

Development of a test method for evaluating the crushing behaviour of unidirectional laminates

Development of a Mesoscale Finite Element Constitutive Model for Fiber Kinking

Contact Info

Product

Resources

About