Identification of mode-I cohesive parameters for bonded interfaces based on DCB test

Valoroso, Nunziante; Sessa, Salvatore; Lepore, Marcello Antonio; Cricrı̀, G.

doi:10.1016/j.engfracmech.2013.02.008

Cited by 63 publications

(28 citation statements)

References 43 publications

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“…An effective approach introduced in [14] defines ⇥ ( ) as the standard deviation of the difference between recorded and estimated responses; nevertheless, it has been shown in [12] how their selection is a critical issue that can significantly influence the parameters identification.…”

Section: Inverse Identification Proceduresmentioning

confidence: 99%

“…Despite of their easy-to-use attitude, the applicability of the previous methods is conditioned to a stable propagation of the fracture during the experimental test [12]. In this sense, whenever underlying hypothesis of the theoretical model are not satisfied, the experimental test cannot define any reliable parameter.…”

Section: Introductionmentioning

confidence: 99%

“…They reproduce the monitored quantities of the experimental test by means of a finite element model that adopt the quantities to be identified as parameters; an objective function measures the residual between the FEM and the experimental response [12,14,15]. Subsequently, numerical optimization strategies can be performed in order to identify the parameters' values that minimize the residual norm.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental Assessment of Carbon Fiber Jacketing of Steel Plates

Sessa¹,

Toraldo²,

Marmo³

et al. 2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Abstract. It is presented a numerical assessment of experimental data concerning Mode-II delamination tests of steel plates jacketed with Carbon fiber textile sheets. In particular, an inverse identification procedure, based on finite element analysis, has been performed in order to estimate the constitutive parameters of the interface bonding steel and textile. Such a procedure proved to be capable of characterizing a constitutive model which reproduces with sufficient accuracy the peak load and the fracture triggering propagation of the bonding interface. The identified finite element model is accurate enough to be employed in force-based design or in structural analysis where a suitable displacement-ultimate limit state is considered.The contribution analyzes the physical interpretation of the Mode-II delamination process with particular focus on its representation by means of finite element models. In particular, a discussion about the delamination process will show the consistency of the finite element model with the physical behavior of the specimen observed during the experimental tests. Such considerations, although encouraging, introduced further issues which outlines future research directions in order to improve the identification strategy.

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Section: Inverse Identification Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Assessment of Carbon Fiber Jacketing of Steel Plates

Sessa¹,

Toraldo²,

Marmo³

et al. 2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

Self Cite

View full text Add to dashboard Cite

show abstract

“…χ * is computed at each step using expressions and conditions in (5). Concerning resolution method, a finite difference method is used to approximate first and second derivatives: for first derivatives, a backward scheme is used and for second derivatives, a centered second order scheme.…”

Section: Numerical Resolution and Algorithmic Aspectsmentioning

confidence: 99%

“…In the first case, Sorensen and Jacobsen [3] have adopted Li and Ward [4] approach to successfully measure cohesive zone law by deriving energy release rate J with respect to the CTOD. For the second approach, Valoroso and Sessa [5] identify a posteriori an exponential law whose parameters are re-calibrated compared to experimental data. It should be noted that formulation of cohesive zone model mentioned above is made such that damage is embedded in that it corresponds to stiffness variations.…”

Section: Introductionmentioning

confidence: 99%

Cohesive Zone Model Identification With DCB Test Parameter Estimation Sensitivity

Ly¹,

Jumel²,

Shanahan³

et al. 2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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Mode I Fracture Toughness Evaluation of Adhesively Bonded Joints via J‐Integral and DIC

Perrella

Berardi

Armentani

2020

Macromolecular Symposia

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Amorphous polymers, such as epoxy resins, are commonly used in the realization of adhesively bonded joints. In this paper an evaluation of mode I fracture toughness of bonded joints is presented. Moreover, an identification of cohesive zone model parameters via Rice's J-integral is described. Experimental tests are performed on double cantilever beam specimens and relative displacements between adherends are acquired by using the digital image correlation technique. The obtained interface law can be implemented in a finite element code for simulating the decohesion process of complex bonded structures.

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Identification of mode-I cohesive parameters for bonded interfaces based on DCB test

Cited by 63 publications

References 43 publications

Experimental Assessment of Carbon Fiber Jacketing of Steel Plates

Experimental Assessment of Carbon Fiber Jacketing of Steel Plates

Cohesive Zone Model Identification With DCB Test Parameter Estimation Sensitivity

Mode I Fracture Toughness Evaluation of Adhesively Bonded Joints via J‐Integral and DIC

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