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Steel and Composite Structures
  Volume 24, Number 6, August30 2017 , pages 643-658

Simplified criteria for finite element modelling of European preloadable bolts
Mario D'Aniello, David Cassiano and Raffaele Landolfo

    High strength preloadable bolt assemblies are commonly adopted in beam-to-column bolted connections. Nowadays, two systems of high strength preloadable grade 10.9 bolt assembly are recommended in Europe for structural applications, namely HR and HV, which are characterized by different failure modes. Recently, experimental tests performed on HR and HV bolt assemblies highlighted that the type of bolt assembly may significantly influence the joint response. Therefore, the accuracy of numerical modelling of bolt assemblies is crucial to simulate effectively the non-linear behaviour of bolted joints with either failure mode 2 or mode 3 of the bolt rows. In light of these considerations, this present paper describes and discusses some modelling criteria for both HR and HV bolts to be implemented in 3D finite element models by finite element analysis and structural designers. The comparison between the calibrated models and experimental results shows the accuracy of the proposed assumptions in simulating all stages of assembly tensile response.
Key Words
    high strength preloadable bolt; HR; HV; modelling criteria; bolted connections
(1) Mario D'Aniello, Raffaele Landolfo:
Department of Structures for Engineering and Architecture, University of Naples "Federico II", via Forno Vecchio, 36 – Napoli 80134, Italy;
(2) David Cassiano:
ISISE, University of Coimbra, Polo II – R. Luís Reis Santos, 3030-788 Coimbra, Portugal.

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