A mixed-mode failure criterion derived from tests on symmetric and asymmetric specimens

Ducept, Fabrice; Gamby, D.; Davies, Peter

doi:10.1016/s0266-3538(98)00105-5

Cited by 120 publications

(62 citation statements)

References 19 publications

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“…The LP method is an analytical approach based on a stress intensity factor calculation defined by K = K I + iK II (being K I and K II the mode I and mode II stress intensity factors) (Ducept et al, 1999;Hutchinson and Suo, 1991). Figure 8 shows the moments near the crack tip in a cracked specimen for a general loading state.…”

Section: Partition Methodsmentioning

confidence: 99%

“…Source: Ducept et al (1999) The resulting expressions of the local method to calculate G I and G II are as follows (Ducept et al, 1999):…”

Section: Figure 8 Moments Near the Crack Tip For A General Loading Statementioning

confidence: 99%

“…Numerical results obtained from finite element (FE) analysis were compared with an analytical local partition (LP) method (Ducept et al, 1999). Both results were also compared with an empirical formulation obtained in previous works (Mollón et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of numerical, empirical and local partition methods in ADCB specimens

Mollón

Bonhomme

Elmarakbi

et al. 2015

IJAUTOC

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It is well-known from the scientific literature that the asymmetric double cantilever beam (ADCB) specimen is subjected to mixed-mode I/II load at the crack tip. In these samples, the crack plane lies outside the laminate midplane. In this work, the energy release rate in modes I and II (G I and G II ) are obtained by different approaches. The analytical determination of G I and G II in ADCB samples is not simple or straightforward and is usually based on partition methods. Numerical results obtained from finite element analysis (FE) are compared with the analytical local partition method (LP) for a carbon fibre epoxy AS4/3501-6 laminate. Both results are also compared with an empirical formulation obtained in previous works. Results obtained from all three methods are in good agreement.

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Section: Partition Methodsmentioning

confidence: 99%

“…Source: Ducept et al (1999) The resulting expressions of the local method to calculate G I and G II are as follows (Ducept et al, 1999):…”

Section: Figure 8 Moments Near the Crack Tip For A General Loading Statementioning

confidence: 99%

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Comparison of numerical, empirical and local partition methods in ADCB specimens

Mollón

Bonhomme

Elmarakbi

et al. 2015

IJAUTOC

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“…Taking a more in-depth investigation into the partitioned fracture energy values, it is evident that the Global Method dedicates the bulk of the total fracture energy to Mode I contributions, while the Local Method allows for a more even distribution of Mode I and Mode II contributions. From the literature, it has been extensively discussed for homogeneous specimens that the participation of Mode I is severely exaggerated using the Global Method due to overly rigid fixity assumptions in the cross-section at the location of the crack front [5,6,23,24], leading to further refinement of the original method in order to more correctly depict the support fixity. It can be confirmed from this extended investigation into asymmetric inhomogeneous specimens that the same phenomenon is present [4,8,25].…”

Section: Application Of Derived Relationships To Experimental Datamentioning

confidence: 99%

Cohesive Fracture Study of a Bonded Coarse Silica Sand Aggregate Bond Interface Subjected to Mixed-Mode Bending Conditions

Chen

El‐Hacha

2013

Polymers

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Abstract:One of the primary objectives in the design of composite structures is the prevention of premature bond failure. Therefore, the characterization of cohesive behavior is an important field of study in structural engineering. Using fracture mechanics principles, the cohesive behavior of an epoxy bonded coarse silica sand aggregate bond interface is studied in this paper, with a focus on finding a general analytical form of idealizing its behavior when used in a specimen possessing asymmetric and inhomogeneous qualities. Two series of small-scale specimens were experimentally tested under mixed-mode bending (MMB) conditions, where it was found that there was negligible influence exerted on the fracture energy of the interface due to changes in the mixed-mode ratio or initial crack length. Using finite element analysis (FEA) methods, an appropriate bilinear traction-separation model was developed to both validate as well as obtain a set of consistent parameters applicable to all tested specimens. Comparison of the Global Method and the Local Method, used to obtain partitioned Mode I and Mode II fracture energy values from MMB specimens, were made, with the conclusion that both methods are adequate in the calculation of the total fracture energy though the Local Method should be used to obtain accurate partitioned Mode I and Mode II fracture energy values. Idealization of the bond interface using the cohesive parameters derived can be accurately achieved by the use of both contact interactions and cohesive elements in two-dimensional and three-dimensional FE models, though the results obtained using contact interactions would be expected to exhibit greater global stiffness.

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“…15. (Ducept, Gamby & Davies, 1999;Pirondi & Nicoletto, 2001 Epoxy adhesive is a bi-component product: the base (epoxy) and the accelerant (modified amine), it cures at room temperature and it has high temperature resistance (Higgins, 2000). The mixing ratio in volume of the two constituents is 2:1 and it is obtained through the use of 3M EPX applicator (Fig.…”

Section: Second Campaign Of Experimental Test (Glare)mentioning

confidence: 99%

Design and use of a Fatigue Test Machine in Plane Bending for Composite Specimens and Bonded Joints

Franco¹,

Marannano²,

Pasta³

et al. 2011

Advances in Composite Materials - Ecodesign and Analysis

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A mixed-mode failure criterion derived from tests on symmetric and asymmetric specimens

Cited by 120 publications

References 19 publications

Comparison of numerical, empirical and local partition methods in ADCB specimens

Comparison of numerical, empirical and local partition methods in ADCB specimens

Cohesive Fracture Study of a Bonded Coarse Silica Sand Aggregate Bond Interface Subjected to Mixed-Mode Bending Conditions

Design and use of a Fatigue Test Machine in Plane Bending for Composite Specimens and Bonded Joints

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