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Assessment of drucker-prager type plasticity models for predicting the behaviour of FRP-confined concrete

Conference Paper


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Abstract


  • This paper presents a critical assessment of the ability of existing Drucker-Prager (D-P) type plasticity models to

    predict the behaviour of confined concrete using both experimental observations and a recent analytical model.

    This assessment shows that for a D-P plasticity model to succeed in predicting the behaviour of FRP-confined

    and other passively-confined concrete, it needs to possess the following three features: (a) a yield criterion which

    includes the third deviatoric stress invariant, (b) a hardening/softening rule which is dependent on the confining

    pressure; and (c) a flow rule which is dependent on both the confining pressure and the rate of confinement

    increment. None of the existing D-P type models possesses all three features, so they cannot be expected to lead

    to accurate predictions for both actively-confined and passively-confined (e.g. FRP-confined) concrete.

UOW Authors


  •   Yu, Tao
  •   Teng, Jin Guang. (external author)
  •   Wong, Y L. (external author)
  •   Dong, S L. (external author)

Publication Date


  • 2007

Citation


  • Yu, T., Teng, J. G., Wong, Y. L. & Dong, S. L. (2007). Assessment of drucker-prager type plasticity models for predicting the behaviour of FRP-confined concrete. In S. T. Smith (Eds.), Proceedings of the First Asia-Pacific Conference on FRP in Structures: APFIS 2007 (pp. 161-166). Hong Kong: Department of Civil Engineering, University of Hong Kong.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1565&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/559

Start Page


  • 161

End Page


  • 166

Abstract


  • This paper presents a critical assessment of the ability of existing Drucker-Prager (D-P) type plasticity models to

    predict the behaviour of confined concrete using both experimental observations and a recent analytical model.

    This assessment shows that for a D-P plasticity model to succeed in predicting the behaviour of FRP-confined

    and other passively-confined concrete, it needs to possess the following three features: (a) a yield criterion which

    includes the third deviatoric stress invariant, (b) a hardening/softening rule which is dependent on the confining

    pressure; and (c) a flow rule which is dependent on both the confining pressure and the rate of confinement

    increment. None of the existing D-P type models possesses all three features, so they cannot be expected to lead

    to accurate predictions for both actively-confined and passively-confined (e.g. FRP-confined) concrete.

UOW Authors


  •   Yu, Tao
  •   Teng, Jin Guang. (external author)
  •   Wong, Y L. (external author)
  •   Dong, S L. (external author)

Publication Date


  • 2007

Citation


  • Yu, T., Teng, J. G., Wong, Y. L. & Dong, S. L. (2007). Assessment of drucker-prager type plasticity models for predicting the behaviour of FRP-confined concrete. In S. T. Smith (Eds.), Proceedings of the First Asia-Pacific Conference on FRP in Structures: APFIS 2007 (pp. 161-166). Hong Kong: Department of Civil Engineering, University of Hong Kong.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1565&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/559

Start Page


  • 161

End Page


  • 166