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Ultimate behaviour and rotation capacity of stainless steel end-plate connections

  • Song, Yuchen (School of Civil Engineering, The University of Sydney) ;
  • Uy, Brian (School of Civil Engineering, The University of Sydney) ;
  • Li, Dongxu (School of Civil Engineering, The University of Sydney) ;
  • Wang, Jia (School of Civil Engineering, The University of Sydney)
  • Received : 2021.07.30
  • Accepted : 2021.12.15
  • Published : 2022.02.25
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Abstract

This paper presents a combined experimental and numerical study on stainless steel end-plate connections, with an emphasis placed on their ultimate behaviour and rotation capacity. In the experimental phase, six connection specimens made of austenitic and lean duplex stainless steels are tested under monotonic loads. The tests are specifically designed to examine the close-to-failure behaviour of the connections at large deformations. It is observed that the rotation capacity is closely related to fractures of the stainless steel bolts and end-plates. In the numerical phase, an advanced finite element model suitable for fracture simulation is developed. The incorporated constitutive and fracture models are calibrated based on the material tests of stainless steel bolts and plates. The developed finite element model exhibits a satisfactory accuracy in predicting the close-to-failure behaviour of the tested connections. Finally, the moment resistance and rotation capacity of stainless steel end-plate connections are assessed based on the experimental tests and numerical analyses.

Keywords

Acknowledgement

The research presented in this paper was supported by the Australian Research Council (ARC) under its Discovery Project scheme (Project ID: DP180100418). The first author is supported by the Engineering and Information Technologies Research Scholarship (EITRS) and the Postgraduate Research Support Scheme (PRSS) awarded by the University of Sydney. The authors are grateful to our industrial partners including Outokumpu, Stirlings, BUMAX and Hobson for supporting the stainless steel plates and bolts used in the experimental programme. Special acknowledgements to Mr. Con Logos (Outokumpu) and Mr. Anders Soderman (BUMAX) for their cooperation. Thanks are also given to Mr. Garry Towell, Dr. Mohanad Mursi, and all the other technical staff at the J.W. Roderick Laboratory for their assistance in the experimental programme. Finally, the authors would like to acknowledge the Sydney Informatics Hub (SIH) and the University of Sydney's high performance computing cluster (Artemis) for providing the high performance computing resources.

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