A Fast Numerical Methodology for Delamination Growth Initiation Simulation

Riccio, Aniello; Damiano, M.

doi:10.1007/978-3-319-04004-2_9

Cited by 2 publications

(7 citation statements)

References 31 publications

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“…The proposed fast delamination growth initiation procedure has been adopted here to investigate the damage behavior of stiffened CFRP panels subjected to compressive loads characterized by delaminations of different sizes and depths. Two test cases taken from literature [38,40] have been considered. The results obtained with the mode I Fast and mixed mode I and II Fast approaches have been compared each other and to standard non-linear VCCT results to verify the accuracy of the proposed methodology.…”

Section: Numerical Applications and Discussionmentioning

confidence: 99%

“…Indeed, a mesh sensitivity analysis has been performed to choose the optimum discretization for the finite element model. The structural configuration adopted for this first test-case [38] has been schematized in Figure 5. The mechanical properties of the adopted AS4/3501-6 material system are reported in Table 1.…”

Section: Test Case 1: Validation and Applicability Of The Mode I Fastmentioning

confidence: 99%

“…The proposed procedure is expected to be applicable in the frame of a preliminary design/optimization stage on composite structures subjected to instability loads. Actually, the state of art of fast procedures for the determination of mode I based delamination growth initiation under compression load for delaminated stiffened panels [38,39] has been improved, by extending the applicability and increasing the accuracy when mixed mode I and II growth is expected.…”

Section: Introductionmentioning

confidence: 99%

“…In Section 2, the theoretical background of the Fast numerical procedure is introduced, and the improvements to the existing Fast approach of [38,39] are described from a theoretical point of view. In Section 3, numerical analyses focused on the validation of the described method are introduced, and the effectiveness of the proposed novel approach is assessed by comparisons with standard non-linear numerical techniques.…”

Section: Introductionmentioning

confidence: 99%

“…The proposed approach can be seen as an improvement of the previously developed mode I Fast method presented in [38,39]. According to the mode I Fast approach, four linear analyses are needed to simulate the delamination growth, as shown in Figure 2.…”

mentioning

confidence: 99%

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Mixed-Mode Delamination Growth Prediction in Stiffened CFRP Panels by Means of a Novel Fast Procedure

Sellitto

Saputo

Damiano³

et al. 2019

Applied Sciences

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Carbon fiber reinforced plastic (CFRP) structures are highly sensitive to delaminations, resulting from low energy impacts or manufacturing defects. Non-linear numerical algorithms are mandatory to investigate the complex mechanisms governing the delamination growth phenomena. Although the high computational costs associated to the non-linear algorithms are acceptable in a detail verification design stage, less expensive procedures are desired in a preliminary design stage or during optimization procedure. In this work, a fast numerical procedure, able to determine the delamination growth initiation in composite structures in the framework of a damage tolerant design approach when mixed mode I and II growth is expected, is introduced. The state of the art of the fast delamination growth procedures is critically discussed and improvements to the existing approaches are proposed to extend their applicability and to increase their accuracy. Comparisons with the standard non-linear delamination growth approaches are presented to assess the effectiveness of the proposed novel Fast approach. The results of the proposed fast approach are comparable with the ones obtained by means of standard numerical non-linear technique, allowing up to 95% computational cost saving.

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Section: Numerical Applications and Discussionmentioning

confidence: 99%

Section: Test Case 1: Validation and Applicability Of The Mode I Fastmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Mixed-Mode Delamination Growth Prediction in Stiffened CFRP Panels by Means of a Novel Fast Procedure

Sellitto

Saputo

Damiano³

et al. 2019

Applied Sciences

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On the identification of cohesive parameters for printed metal-polymer interfaces

Heinrich

Langner

Lammering

2017

Smart Mater. Struct.

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The mechanical behavior of printed electronics on fiber reinforced composites is investigated. A methodology based on cohesive zone models is employed, considering interfacial strengths, stiffnesses and critical strain energy release rates. A double cantilever beam test and an end notched flexure test are carried out to experimentally determine critical strain energy release rates under fracture modes I and II. Numerical simulations are performed in Abaqus 6.13 to model both tests. Applying the simulations, an inverse parameter identification is run to determine the full set of cohesive parameters.

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A Fast Numerical Methodology for Delamination Growth Initiation Simulation

Cited by 2 publications

References 31 publications

Mixed-Mode Delamination Growth Prediction in Stiffened CFRP Panels by Means of a Novel Fast Procedure

Mixed-Mode Delamination Growth Prediction in Stiffened CFRP Panels by Means of a Novel Fast Procedure

On the identification of cohesive parameters for printed metal-polymer interfaces

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