Modelling the stress vector continuity at the interface of bonded joints

Cheikh, Mohammed; Coorevits, Patrice; Loredo, Alexandre

doi:10.1016/s0143-7496(01)00009-4

Cited by 29 publications

(15 citation statements)

References 10 publications

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“…With the standard finite element method, based on the variational principal of minimum potential energy whose single variable is the displacement field, the continuity of the displacement is satisfied but the continuity of the stress vector is not exactly verified. Therefore, refined meshes are also needed near the interface in order to obtain good numerical results especially for large material heterogeneity of the assemblies [20,21]. Results are presented, in the case of tension-shear loadings, for two angles of the beak (''90": right angle, ''45": beak with an angle of 45°) and for three geometries of the edge of the adhesive joint (''O": outer or ''convex" edge; ''S": straight edge; ''I": inner or ''concave" edge).…”

Section: Parameters Of the Studymentioning

confidence: 99%

Numerical analysis of edge effects in adhesively-bonded assemblies application to the determination of the adhesive behaviour

Cognard

2008

Computers & Structures

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Section: Parameters Of the Studymentioning

confidence: 99%

Numerical analysis of edge effects in adhesively-bonded assemblies application to the determination of the adhesive behaviour

Cognard

2008

Computers & Structures

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“…One can see that calculation of a brazed assembly with an elastic behavior is flawed. [8] Correct study of brazed assembly must be carried out under elastoplastic assumption.…”

Section: Introductionmentioning

confidence: 99%

Identification of mechanical properties of CuSil-steel brazed structures joints: a numerical approach

Nafi

Cheikh

Mercier

2013

Journal of Adhesion Science and Technology

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In this paper, the inverse method is used to identify the mechanical characteristics of a brazed joint. This technique is based upon tensile tests and/or shearing test combined with the results of a calculation using finite elements method. This paper shows that calculation of a brazed assembly under an elastic behavior assumption is flawed. A correct study of a brazed assembly must be done under an elastoplastic assumption. The presented method will be used for calculation of molds manufactured by stratoconception (sheet metal assembling).

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“…With the standard finite element method, based on the variational principal of minimum potential energy whose unique variable is the displacement field, the continuity of the displacement is satisfied but the continuity of the stress vector is not exactly verified. Therefore refined meshes are also needed near the interface, in order to obtain good numerical results, especially for large material heterogeneity of the structure [20]. After verifying this, different shapes of the edge of the adhesive joint have been studied.…”

Section: Analysis Of the Variability Of Resultsmentioning

confidence: 99%

Development of an improved adhesive test method for composite assembly design

Cognard

Davies

Gineste

et al. 2005

Composites Science and Technology

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This study is concerned with improving performance of composite structures through the use of adhesive bonding, particularly for marine and underwater applications. Some preliminary results from tests on simple composite/composite assemblies are given first. Difficulty in modelling the failure of even these simple joints highlighted the need for more reliable constituent input data. The first objective was to define an experimental methodology enabling the adhesives of interest to be characterised up to failure. A metal-metal assembly was considered, in order to concentrate on the analysis of the behaviour of thin adhesive films. The aims were to characterise the adhesive, analyse its non-linear behaviour, and study the influence of parameters such as film thickness and manufacturing conditions. In order to be able to study the behaviour of the adhesive as a function of the normal stress component, an important parameter, a modified Arcan fixture has been developed, which enables compression or tension to be combined with shear loads. First results from this fixture are presented, together with analysis of sources of scatter in results.

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Modelling the stress vector continuity at the interface of bonded joints

Cited by 29 publications

References 10 publications

Numerical analysis of edge effects in adhesively-bonded assemblies application to the determination of the adhesive behaviour

Numerical analysis of edge effects in adhesively-bonded assemblies application to the determination of the adhesive behaviour

Identification of mechanical properties of CuSil-steel brazed structures joints: a numerical approach

Development of an improved adhesive test method for composite assembly design

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