Cyclic performance of adhesively bonded joints using the Distinct Element Method: Damage and parametric analysis

Biscaia, Hugo C.; Micaelo, Rui

doi:10.1016/j.compositesb.2019.107468

Cited by 8 publications

(2 citation statements)

References 56 publications

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“…The response as well as the failure mode of each group of specimens is mainly cohesiveadhesive and is shown in Figure 6. For the groups with laminated sheets, that is LSHl330x3, LSHl370x3, and LSCr330x3, the failure mechanism was progressive and resulted from the development of cracks on the concrete mass, followed by detachment of the applied composite sheet after it was tensed [54], regardless of the existence of corrosion products. Due to the consistency of the laminated sheets (carbon), the elongation is not measurable, and as such it is not considered in the following analysis.…”

Section: Resultsmentioning

confidence: 99%

Efficiency of CFRP Strengthening Measures for Reinforced Concrete Structural Members Using Toughened Epoxies

Achillopoulou,

Kosta,

Stamataki

et al. 2024

Construction Materials

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This paper aims to investigate the interface efficiency of Carbon Fiber Reinforced Polymers (CFRP) adhesively bonded on concrete, a commonly used retrofitting measure applied for enhancing the deformability and strength of decaying structures or existing ones with low capacity. The efficiency quantification is expressed with the Interface Capacity Index (IC). The index correlates the thickness and strength of each layer of the strengthening system and accounts for the transferred loads (ICL) and the strain distribution that causes the failure propagation on the concrete substrate (ICfp). The investigation focuses on different CFRP strengthening schemes (laminated fabrics, prefabricated plates, Near Surface Mounted bars-NSM) applied to concrete substrates using different adhesive layers. Two cases were studied for different levels of concrete’s integrity: (a) healthy and (b) containing corrosion products. The experimental results were used to calibrate the numerical models and to evaluate the effects of different strengthening strategies. The results show the tendency of the strengthening systems to shift the interface performance from fully elastic to non-linear. Further, the quantification of the efficiency of retrofitting can be addressed by accounting for the mechanical and geometrical properties at the interface level, representing different failure modes and integration levels.

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Section: Resultsmentioning

confidence: 99%

Efficiency of CFRP Strengthening Measures for Reinforced Concrete Structural Members Using Toughened Epoxies

Achillopoulou,

Kosta,

Stamataki

et al. 2024

Construction Materials

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“…Biscaia et al. (2013a, b, 2019, 2022) introduced a new numerical model to explore the interfacial behavior of bonded joints and investigated the interfacial failure of hybrid circular and tubular bonded joints. In addition, slip distribution was estimated using the finite difference approach.…”

Section: Introductionmentioning

confidence: 99%

Theoretical analysis and numerical simulation of axial tensile behavior of pipe joints based on bi-linear cohesive bond-slip model

Yuan,

Han,

et al. 2023

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PurposeDue to its inexpensive production costs, low stress concentration and maintenance-friendliness, the adhesive bonded pipe joint is frequently utilized for pipe connection. However, further theoretical analysis is needed to understand the debonding failure mechanism of such bonded pipe joints under axial tension.Design/methodology/approachIn this study, based on the bi-linear cohesive zone model, the integrated closed-form solutions were derived by considering the axial stiffness ratio and failure stage to determine the relative interfacial slip, interfacial shear stress and relationship of tension–displacement in the bonded pipe joint.FindingsAdditionally, solutions for the critical bonded length and the ultimate load capacity were put forth. Besides, the numerical study was conducted to verify the theoretical solutions regarding the load–displacement relationship. The interfacial shear stress distribution at different failure stages was presented to understand the interfacial shear stress transmission and debonding process. The effect of bonded length on the ultimate load and ductility of pipe joints was also discussed.Originality/valueThe findings in this study can give a reference for the design of bonded pipe joints in their actual engineering applications.

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Development of a Cohesive Model for CFRP-To-Steel Bonded Joints for Low and High Temperatures

et al. 2023

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Cyclic performance of adhesively bonded joints using the Distinct Element Method: Damage and parametric analysis

Cited by 8 publications

References 56 publications

Efficiency of CFRP Strengthening Measures for Reinforced Concrete Structural Members Using Toughened Epoxies

Efficiency of CFRP Strengthening Measures for Reinforced Concrete Structural Members Using Toughened Epoxies

Theoretical analysis and numerical simulation of axial tensile behavior of pipe joints based on bi-linear cohesive bond-slip model

Development of a Cohesive Model for CFRP-To-Steel Bonded Joints for Low and High Temperatures

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