3. Combining processes in a single fastener
Wherever possible, it is advisable to avoid combining two different connection methods (hybrid connection), as these transmit forces in proportion to their respective stiffnesses. Since it is often difficult to determine these stiffnesses precisely, the design and calculation of such a connection is problematic. Only non-displacement processes can be combined, in which case it is customary to reserve each of the assembly means used for the transmission of a particular type of force, provided that it is first ensured that the operation of one does not impair the operation of the other.
The creation of hybrid assemblies is subject to fairly strict execution rules.
Example
EN 1993-1-8 stipulates that, in a fastener combining prestressed bolts of classes 8.8 or 10.9 and welds, which...
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Combining processes in a single fastener
Assemblies subjected to shock, vibration or alternating loads
Bibliography
Digital media
APK – ESDEP Program (European Steel Design Education Program). CD-ROM, Cahiers de l'APK, issue no. 23, OTUA (2000).
Standards and norms
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Eurocodes
- AFNOR. Eurocode 0 : Bases de calcul des structures, (2e tirage). - NF EN 1990 - avril 2003
- AFNOR. Eurocode 1: Actions on structures. Part 1-7: General actions – Accidental actions. - NF EN 1991-1-7 - février 2077
- AFNOR. Eurocode 3 : Calcul des structures en acier. Partie 1-1 : Règles générales et règles pour les bâtiments, (3e tirage). - NF EN 1993-1-1...
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Organizations – Federations – Associations
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AFFIX, Association of manufacturers of mechanical fasteners
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AFNOR, French Association for Standardization
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