An enhanced beam-theory model of the mixed-mode bending (MMB) test—Part I: Literature review and mechanical model

Bennati, Stefano; Fisicaro, Paolo; Valvo, Paolo Sebastiano

doi:10.1007/s11012-012-9686-3

Cited by 37 publications

(30 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A similar result was obtained by Bennati et al [35,36], who developed an enhanced beam-theory (EBT) model of the MMB test, where the sublaminates are flexible, extensible, and shear-deformable laminated beams, partly connected by an elastic interface consisting of normal and tangential springs. As a special case, they obtained the solution for an orthotropic ENF test specimen in terms of compliance,…”

Section: Elastic-interface Modelssupporting

confidence: 77%

“…Besides the adoption of a more or less refined structural theory for the sublaminates, the connection between them has to be suitably described. To this aim, models of growing complexity can be chosen, ranging from rigid connections [15][16][17][18][19][20][21][22][23][24] to elastic interfaces [25][26][27][28][29][30][31][32][33][34][35][36][37][38] and cohesive zone models [39][40][41][42][43][44][45][46][47]. This choice is relevant not only for the accurate prediction of the laminate structural response -e.g.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Effects of Shear on Mode II Delamination

Valvo

2018

Frattura Ed Integrità Strutturale

View full text Add to dashboard Cite

ABSTRACT. The paper focuses on the effects of shear deformation and shear forces on the mode II contribution to the energy release rate in delaminated beams. A critical review of the relevant literature is presented, starting from the end-notched flexure test as the prototype of delaminated laminates subjected to pure mode II fracture. Several models of the literature are recalled from simple beam theory to more refined models. The role of first-order shear deformation in line with the Timoshenko beam theory is investigated as distinct from the local crack-tip deformation related to the shear modulus of the material. Then, attention is moved on to a general delaminated beam with an arbitrarily located through-the-width delamination, subjected to mixedmode fracture. Several fracture mode partition methods of the literature are reviewed with specific attention on the effects of shear on the mode II contribution to the energy release rate.KEYWORDS. Delamination; Mixed-mode fracture; Mode II fracture; Beam theory; Shear deformation; End-notched flexure test.Citation: Valvo, P.S., The effects of shear on Mode II delamination: a critical review,

show abstract

Section: Elastic-interface Modelssupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

The Effects of Shear on Mode II Delamination

Valvo

2018

Frattura Ed Integrità Strutturale

View full text Add to dashboard Cite

show abstract

“…[14,15]) and changes the dynamic properties significantly, and therefore has a major influence on the lifetime of the structure. The delamination behavior of composite materials is characterized by different specimens for mode-I [16][17][18][19][20][21][22][23], mode-II [24][25][26], mixed-mode I/II [27][28][29][30][31][32][33][34][35][36][37], mode-III [38][39][40][41][42][43][44][45][46][47][48], mixed-mode I/III [49] mixed-mode II/III [42,[50][51][52][53][54][55][56][57][58][59] and mixed-mode I/II/III [60][61]…”

Section: Introductionmentioning

confidence: 99%

Antiplane–inplane shear mode delamination between two second-order shear deformable composite plates

Szekrényes

2016

Mathematics and Mechanics of Solids

View full text Add to dashboard Cite

The second-order laminated plate theory is utilized in this work to analyze orthotropic composite plates with asymmetric delamination. First, a displacement field satisfying the system of exact kinematic conditions is presented by developing a double-plate system in the uncracked plate portion. The basic equations of linear elasticity and Hamilton's principle are utilized to derive the system of equilibrium and governing equations. As an example, a delaminated simply supported plate is analyzed using Lévy plate formulation and the state-space model by varying the position of the delamination along the plate thickness. The displacements, strains, stresses and the J-integral are calculated by the plate theory solution and compared with those by linear finite-element calculations. The comparison of the numerical and analytical results shows that the second-order plate theory captures very well the mechanical fields. However, if the delamination is separated by only a relatively thin layer from the plate boundary surface, then the second-order plate theory approximates badly the stress resultants and so the mode-II and mode-III J-integrals and thus leads to erroneous results.

show abstract

“…Ducept et al [16] carried out experiments on ADCB glass fibre reinforced epoxy composite samples and compared results with analytical and numerical ones. Bennati et al [17,18] developed an enhanced beam theory model for the ADCB test based on the experimental work developed by Ducept et al ADCB configuration has been analyzed by other authors [19][20][21].…”

Section: Introductionmentioning

confidence: 99%