Dynamic Crack Growth along Interfaces

Needleman, A.; Çöker, Demirkan; Rosakis, A. J.

doi:10.1007/978-94-017-0081-8_29

Cited by 2 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, the interface is assumed to be elastic and damageable in most cases [16][17][18]. Some studies analyze crack growth along the interface [19,20]. Reinoso et al [21] proposed a nonlinear cohesive interface model with a finite thickness for modeling delamination in fiber-reinforced composite laminates relying on the solid shell concept which is especially relevant for the analysis of thinwalled composite structures.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear interfacial contact laws in multi-layer elastic-viscoelastic structural systems

Tran Nam,

Nguyen Thi Thu

2024

View full text Add to dashboard Cite

Layered structures are widely used in construction, such as pavement structures consisting of multiple layers of different materials or interfaces between bricks and mortar in masonry structures, etc. In analyzing such structures, understanding the properties of the interface between two layers of materials is essential. If one layer of material contains cracks and layers exhibit viscoelastic behavior, determining the properties of the interface becomes challenging. This study proposes a constitutive mechanical law to model the behavior of the interface between a microcracked viscoelastic medium and an undamaged elastic body based on the homogenization method. The interface is modeled by a layer of zero thickness. The coupling between the homogenization technique and the Griffith’s theory is used to provide the effective behavior of the micro-cracked medium. The interface is modelled as an effective medium (EF) characterized by normal and tangential stiffnesses (CN, CT ). In this work, two viscoelastic models are considered, i.e., Burger and Modified Maxwell. The formulas of CN and CT for two cases of crack distributions (isotropic and transversely isotropic) are obtained by asymptotic techniques where the thickness of the joint tends to zero

show abstract

Section: Introductionmentioning

confidence: 99%

Nonlinear interfacial contact laws in multi-layer elastic-viscoelastic structural systems

Tran Nam,

Nguyen Thi Thu

2024

View full text Add to dashboard Cite

show abstract

“…The specimen's length, width and thickness, and whether the specimen is unnotched or notched and, if notched, the depth and sharpness of the notch, may all influence the observed fracture toughness (Kinloch A.J. & Young R.J. 1985, Needleman A. et al 2005, Marshall G.P. et al 1973, Low I.M.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Effect of Different Pre-Cracking Methods on Fracture Toughness of RT-PMMA

Haddadi

Choupani

Abbasi

2016

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

In this study, eight techniques including coping saw, metal slitting saw, razor blade, cubic boron nitride (CBN) disc, scoring, diecutting and guillotining, diamond disc, and laser cutting methods were used to produce pre-cracked fracture toughness (Kc) test specimens made of poly(methyl methacrylate)/graft-acrylonitrile butadiene styrene blends. The influences of notch shape (radial, rectangular, or angular-shaped and variety of thicknesses), precracking method, chip removing or non-chip removing, and the contact or non-contact methods on the results obtained in fracture toughness tests were investigated. The results were analyzed by two methods, quantitatively and qualitatively, by comparing the obtained Kc results and studying the SEM and optical microscopy images, respectively. The results indicated that the different conditions of a produced pre-crack including; geometry of pre-crack due to geometry of tools, residual stress due to pre-crack creation, heat affected zone, damage of crack tip, and producing crazing around the crack tip could affect the fracture toughness. The maximum difference resulted from different pre-cracking methods was equal to 0.24 MPa.m 0.5 and the lowest value of fracture toughness Kc, 2.53 MPa.m 0.5 , belonged to the scoring method but the highest value, 2.77 MPa.m 0.5 , belonged to the metal slitting saw method. Also, the results indicated that the effects of notching on toughness of RT-PMMA had a low notch sensitivity and the differences between minimum and maximum Kc values was found about 9%.

show abstract

Dynamic Crack Growth along Interfaces

Cited by 2 publications

References 17 publications

Nonlinear interfacial contact laws in multi-layer elastic-viscoelastic structural systems

Nonlinear interfacial contact laws in multi-layer elastic-viscoelastic structural systems

Investigation on the Effect of Different Pre-Cracking Methods on Fracture Toughness of RT-PMMA

Contact Info

Product

Resources

About