Theoretical and experimental investigation of stress redistribution in open hole composite laminates due to damage accumulation

Iarve, Endel V.; Mollenhauer, David; KIM, R

doi:10.1016/s1359-835x(04)00159-9

Cited by 65 publications

(30 citation statements)

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“…Direct coupling of CDM-based in-plane damage modes with various fracture mechanics models for delamination has also been attempted by several research groups but with only limited success (e.g., Cox and Yang 2006;Van de Meer and Sluys 2008;Carpinteri and Ferro 2003). Several recent studies have revealed that the homogenization process in CDMs leads to loss of key information on multipledamage coupling at the macroscopic scale and results in inaccurate prediction of crack paths ( Van de Meer and Sluys 2008;Talreja 2006) and severe stress locking (Iarve and Mollenhauer 2005).…”

Section: Modeling Interacting Mechanisms In Composite Materialsmentioning

confidence: 99%

An augmented finite element method for modeling arbitrary discontinuities in composite materials

2009

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An augmented finite element method ("A-FEM") is presented that is a variant of the method of Hansbo and Hansbo (Comput Methods Appl Mech Eng, 193: 3523-3540, 2004), which can fully account for arbitrary discontinuities that traverse the interior of elements. Like the method of Hansbo and Hansbo, the A-FEM preserves elemental locality, because element augmentation is implemented within single elements and involves nodal information from the modified element only. The A-FEM offers the additional convenience that the augmentation is implemented via separable mathematical elements that employ standard finite element nodal interpolation only. Thus, the formulation is fully compatible with standard commercial finite element packages and can be incorporated as a user element without access to the source code. Because possible discontinuities include both elastic heterogeneity and cracks, the A-FEM is ideally suited to modeling damage evolution in structural or biological materials with complex morphology. Elements of a multi-scale approach to analyzing damage

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Section: Modeling Interacting Mechanisms In Composite Materialsmentioning

confidence: 99%

An augmented finite element method for modeling arbitrary discontinuities in composite materials

2009

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“…Intra-ply damage modes have been investigated primarily within the framework of Continuum Damage Mechanics (CDM), 8,9 while delamination has been studied extensively using interface fracture modeling techniques such as cohesive zone models 10 and virtual crack closure techniques (VCCT). 10,11 Despite these advances in progressive damage modeling, recent studies [12][13][14][15] have suggested that CDM models for ply failure, coupled with cohesive zone models for delamination have difficulty in accurately representing laminate failure sequences that exhibit strong coupling between transverse matrix cracking and delamination. In the CDM methodology a crack or displacement discontinuity is replaced with local volumetric stiffness degradation.…”

Section: Introductionmentioning

confidence: 99%

“…As the crack opens, the stiffness degradation is such that stress should not be transferred across the crack faces. Iarve 15 showed that this is not necessarily the case, and because of the spurious stress transfer, local stress redistribution is not accurately predicted in the vicinity of damage. The stress locking or spurious stress transfer observed in these studies, is mesh orientation dependent and may be alleviated by aligning the element edges with the crack direction.…”

Section: Introductionmentioning

confidence: 99%

Continuum Damage Mechanics Models for the Analysis of Progressive Failure in Open-Hole Tension Laminates

Song

Rose

2011

52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

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“…The PNM and A-FEM use only standard shape functions, and all degrees of freedom are physical (i.e., correspond to real material displacements), making them compatible with any commercial FEM code. Recently, Van der Meer (192) comprehensively reviewed the PNM, the A-FEM, and the regularized FEM, which was developed by Iarve and colleagues (193)(194)(195).…”

Section: Rapid Computation Of Multiple Discrete Damage Eventsmentioning

confidence: 99%

Stochastic Virtual Tests for High-Temperature Ceramic Matrix Composites

Cox

Bale

Begley

et al. 2014

Annu. Rev. Mater. Res.

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We review the development of virtual tests for high-temperature ceramic matrix composites with textile reinforcement. Success hinges on understanding the relationship between the microstructure of continuous-fiber composites, including its stochastic variability, and the evolution of damage events leading to failure. The virtual tests combine advanced experiments and theories to address physical, mathematical, and engineering aspects of material definition and failure prediction. Key new experiments include surface image correlation methods and synchrotron-based, micrometer-resolution 3D imaging, both executed at temperatures exceeding 1,500• C. Computational methods include new probabilistic algorithms for generating stochastic virtual specimens, as well as a new augmented finite element method that deals efficiently with arbitrary systems of crack initiation, bifurcation, and coalescence in heterogeneous materials. Conceptual advances include the use of topology to characterize stochastic microstructures. We discuss the challenge of predicting the probability of an extreme failure event in a computationally tractable manner while retaining the necessary physical detail. 17.1

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Theoretical and experimental investigation of stress redistribution in open hole composite laminates due to damage accumulation

Cited by 65 publications

References 0 publications

An augmented finite element method for modeling arbitrary discontinuities in composite materials

An augmented finite element method for modeling arbitrary discontinuities in composite materials

Continuum Damage Mechanics Models for the Analysis of Progressive Failure in Open-Hole Tension Laminates

Stochastic Virtual Tests for High-Temperature Ceramic Matrix Composites

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