Steel and Composite Structures

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Simplified criteria for finite element modelling of European preloadable bolts

  • D'Aniello, Mario (Department of Structures for Engineering and Architecture, University of Naples "Federico II") ;
  • Cassiano, David (ISISE, University of Coimbra) ;
  • Landolfo, Raffaele (Department of Structures for Engineering and Architecture, University of Naples "Federico II")
  • Received : 2016.08.09
  • Accepted : 2017.05.22
  • Published : 2017.08.30
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Abstract

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.

Keywords

Acknowledgement

Supported by : European Union's Research Fund for Coal and Steel (RFCS)

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