Steel and Composite Structures

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Hysteretic model for stud connection in composite structures

  • Xi Qin (School of Civil Engineering, Qingdao University of Technology) ;
  • Guotao Yang (School of Civil Engineering, Qingdao University of Technology)
  • Received : 2022.07.10
  • Accepted : 2023.04.24
  • Published : 2023.06.10
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Abstract

The establishment of a hysteretic model which can accurately predict the hysteretic characteristics of the stud connection is of utmost importance for the seismic assessment of composite structures. In this paper, the Bouc-Wen-Baber-Noori(BWBN) model was adopted to describe the typical hysteretic characteristics of stud connections. Meanwhile, the Newton-Raphson iterative procedure and the Backward Euler method were used to determine the restoring force, and the Genetic Algorithm was employed to identify the parameters of the BWBN model based on the experimental data consisting of eight specimens. The accuracy of the identified parameters was demonstrated by comparison with the experimental data. Finally, prediction equations for the BWBN model parameters were developed in terms of the physical parameters of stud connections, which provides an approach to get the hysteretic response of stud connections conveniently.

Keywords

Acknowledgement

Work for this paper is supported by Natural Science Foundation of China (NSFC) through Grant Nos. 5180081528 and 51978351. Herewith acknowledge with best thanks.

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