A bilinear cohesive zone model tailored for fracture of asphalt concrete considering viscoelastic bulk material

Song, Seong Hyeok; Paulino, Gláucio H.; Buttlar, William G.

doi:10.1016/j.engfracmech.2006.04.030

Cited by 335 publications

(138 citation statements)

References 28 publications

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“…Equations relating normal and tangential displacement jumps across the cohesive surfaces with the proper tractions define a cohesive-zone model. Among numerous cohesive-zone models developed for different specific purposes, this study used an intrinsic bilinear cohesive-zone model [6,28,29]. As shown in Fig.…”

Section: Fracture Energy From Finite-element Modeling With Cohesive Zonementioning

confidence: 99%

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Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures

Kim

Ban

2013

Journal of Testing and Evaluation

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Cracking in asphaltic pavement layers causes primary failure of the roadway structure, and the fracture resistance and characteristics of asphalt mixtures significantly influence the service life of asphaltic roadways. A better understanding of the fracture process is considered a necessary step to the proper development of design-analysis procedures for asphaltic mixtures and pavement structures. However, such effort involves many challenges because of the complex nature of asphaltic materials. In this study, experiments were conducted using uniaxial compressive specimens to characterize the linear viscoelastic properties and semi-circular bending (SCB) specimens to characterize fracture behavior of a typical dense-graded asphalt paving mixture subjected to various loading rates and at different temperatures. The SCB fracture test was also incorporated with a digital image correlation (DIC) system and finite-element model simulations including material viscoelasticity and cohesive-zone fracture to effectively capture local fracture processes and resulting fracture properties. The test results and model simulations clearly demonstrate that: (1) the rate-and temperature-dependent fracture characteristics need to be identified at the local fracture process zone, and (2) the rate-and temperature-dependent fracture properties are necessary in the structural design of asphaltic pavements with which a wide range of strain rates and service temperatures is usually associated.

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Section: Fracture Energy From Finite-element Modeling With Cohesive Zonementioning

confidence: 99%

“…Others have conducted fracture tests and numerical analyses by means of a cohesive-zone model to study the fracture behavior of asphalt mixtures [5][6][7][8]. The cohesive-zone modeling approach has recently received increased attention from the asphaltic materials and pavement mechanics community to model crack initiation and growth.…”

Section: Introductionmentioning

confidence: 99%

Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures

Kim

Ban

2013

Journal of Testing and Evaluation

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“…Recorded in the literature is the successful application of these elements to quasistatic fracture processes for bulk-material Models (A and C) depicted in Figure 3. Limited research [15][16][17] has been performed on the use of rate-independent cohesive elements with rate-dependent bulk-material models of the type depicted in Figure 3 (B and D). However, this approach has proven insufficient to represent the experimental dynamic crack results (see references [18][19][20][21]) and a rate-dependent cohesive model is a possible solution.…”

Section: Rate-independent Czmsmentioning

confidence: 99%

“…Ortiz & Pandolfi [15] for example used this approach and demonstrated good agreement with the experimental data and argued that through this approach the CZM captures the rate dependency of the failure process. Similarly, Song et al [16] and Zhou et al [17] successfully applied the approach to asphalt concrete and reinforced aluminium, respectively. Zhou et al [18] pointed out however that the success of the study of Ortiz & Pandolfi [15] was limited to ductile materials and was successful because of the intrinsic timescale associated with ductility.…”

Section: Introductionmentioning

confidence: 99%

Rate-dependent elastic and elasto-plastic cohesive zone models for dynamic crack propagation

Salih

Davey²,

Zou³

2016

International Journal of Solids and Structures

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To overcome deficiencies with existing approaches a new cohesive zone model is introduced and trialled in this paper. The focus is on rate-dependent cohesive zone models which have appeared in the recent literature but can be shown to suffer unrealistic behaviour. Different combinations of material response are examined with rate effects appearing either in the bulk material or localised to the cohesive zone or in both. A benefit of using a cohesive-zone approach is the ability to capture plasticity and rate effects locally. Introduced is a categorisation of bulk-material responses and cohesive zone models with particular prominence to the role of rate and plasticity. The shape of the traction separation curve is shown to have an effect and captured in this paper with application of a trapezoidal cohesive zone model. Rate dependency for the cohesive zone model is introduced in terms of a ratedependent dashpot models applied either in parallel and/or in series. Traditionally, two possible methods are adopted to incorporate rate dependency, which are either via a temporal critical stress or a temporal critical separation. Applied singularly, tests reveal unrealistic crack behaviour at high loading rates. The new rate-dependent cohesive model introduced here couples the temporal responses of critical stress and critical displacement and is shown to provide for a stable realistic solution to dynamic fracture. Dynamic trials are performed on a cracked specimen to demonstrate the capability of the new approach.

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“…12. This traction-separation law is built using a bi-linear cohesive zone model [43][44][45][46][47] that can be mathematically expressed as follows…”

Section: Regionmentioning

confidence: 99%

Determination of strength and debonding energy of a glass-concrete interface for encapsulation-based self-healing concrete

Gilabert

Tittelboom

Tsangouri

et al. 2017

Cement and Concrete Composites

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This paper presents a combined experimental-numerical analysis to assess the strength and fracture toughness of a glass-concrete interface. This interface is present in encapsulation-based self-healing concrete. There is absence of published results of these two properties, despite their important role in the correct working of this self-healing strategy. Two setups are used: uniaxial tensile tests to assess the bonding strength and four point bending tests to get the interfacial energy. The complementary numerical models for each setup are conducted using the finite element method. Two approaches are used: cohesive zone model to study the interface strength and the virtual crack closure technique to analyze the interfacial toughness. The models are validated and used to verify the experimental interpretations. It is found that a glass-concrete interface can develop a maximum strength of approximately 1 N/mm 2 with fracture energy of 0.011 J/m 2 .

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A bilinear cohesive zone model tailored for fracture of asphalt concrete considering viscoelastic bulk material

Cited by 335 publications

References 28 publications

Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures

Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures

Rate-dependent elastic and elasto-plastic cohesive zone models for dynamic crack propagation

Determination of strength and debonding energy of a glass-concrete interface for encapsulation-based self-healing concrete

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