Cyclic behaviour modelling of GFRP adhesive connections by an imperfect soft interface model with damage evolution

Lamberti, Marco; Maurel-Pantel, Aurélien; Lebon, Frédéric; Ascione, Francesco

doi:10.1016/j.compstruct.2021.114741

Cited by 8 publications

(4 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this section, the steps are illustrated that led to the formulation of the imperfect interface model. The theoretical model is obtained by homogenization techniques and by asymptotic methods in the context of small perturbation coupling of unilateral contact and damage [18,19,[22][23][24][25][26].…”

Section: Imperfect Interface Modelmentioning

confidence: 99%

Mechanical Performance of Adhesive Connections in Structural Applications

Lamberti,

Maurel-Pantel,

Lebon

2023

Materials

View full text Add to dashboard Cite

Adhesive bonding is an excellent candidate for realising connections for secondary structures in structural applications such as offshore wind turbines and installations, avoiding the risk and associated welding problems. The strength of the adhesive layer is an important parameter to consider in the design process it being lower than the strength capacity of the bonding material. The presence of defects in the adhesive materials undoubtedly influences the mechanical behaviour of bonded composite structures. More specifically, the reduction in strength is more pronounced as the presence of defects (voids) increases. For this reason, a correct evaluation of the presence of defects, which can be translated into damage parameters, has become essential in predicting the actual behaviour of the bonded joints under different external loading conditions. In this paper, an extensive experimental programme has been carried out on adhesively bonded connections subjected to Mode I and Mode II loading conditions in order to characterise the mechanical properties of a commercial epoxy resin and to define the damage parameters. The initial damage parameters of the adhesive layer have been identified according to the Kachanov–Sevostianov material definition, which is able to take into account the presence of diffuse initial cracking.

show abstract

Section: Imperfect Interface Modelmentioning

confidence: 99%

Mechanical Performance of Adhesive Connections in Structural Applications

Lamberti,

Maurel-Pantel,

Lebon

2023

Materials

View full text Add to dashboard Cite

show abstract

“…In a previous work presented by some of the authors [4], the mechanical properties in terms of stiffness and crack length were evaluated for bonded joints subjected to Mode I loading, and are recalled here to provide, together with the current investigation, a complete characterization of the adhesive properties in Mode I and II, useful for FEM modelling and analysis. In this section, the adhesive stiffness in Mode II has been calculated from the mean value of the shear stress versus displacement curve, allowing comparison with the experimental results in Mode I.…”

Section: Adhesive Mechanical Properties In Mode I and Ii Loadingmentioning

confidence: 99%

“…The most important properties of adhesive bonds are undoubtedly the absence of holes, which prevents high stress concentration on the bonded surface, the ease and ability to bond different materials such as steel, aluminium and fibre reinforced composites, the speed of installation or replacement of damaged structural elements, the ease of maintenance and the improvement of corrosion protection [2]. These properties, which are essential in the marine industry, mean that this type of joint is considered particularly suitable for the construction of secondary components in aggressive environments, such as wind turbines in offshore structures [3,4]. In addition, many steel structures-built decades ago around the world, such as high-rise buildings, steel monopoles or steel bridges, need to be rehabilitated and repaired [5].…”

Section: Introductionmentioning

confidence: 99%

“…In this context, in a first paper [4], the authors successfully demonstrated the possibility of describing the evolution of the mechanical properties of bonded joints under monotonic and non-monotonic loading in Mode I, using an imperfect interface model with evolving damage. This model was identified using elementary tensile tests and validated on a complex bonded GRP beam structure.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation