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Application of fractional calculus in modelling ballast deformation under cyclic loading

Journal Article


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Abstract


  • Most constitutive models can only simulate cumulative deformation after a limited number of cycles. However, railroad ballast usually experiences a large number of train passages that cause history-dependent long-term deformation. Fractional calculus is an efficient tool for modelling this phenomenon and therefore is incorporated into a constitutive model for predicting the cumulative deformation. The proposed model is further validated by comparing the model predictions with a series of corresponding experimental results. It is observed that the proposed model can realistically simulate the cumulative deformation of ballast from the onset of loading up to a large number of load cycles.

UOW Authors


  •   Sun, Yifei (external author)
  •   Indraratna, Buddhima (external author)
  •   Carter, John Philip. (external author)
  •   Marchant, Timothy
  •   Nimbalkar, Sanjay S. (external author)

Publication Date


  • 2017

Citation


  • Sun, Y., Indraratna, B., Carter, J. P., Marchant, T. & Nimbalkar, S. (2017). Application of fractional calculus in modelling ballast deformation under cyclic loading. Computers and Geotechnics, 82 16-30.

Scopus Eid


  • 2-s2.0-84990065062

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7268&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/6238

Number Of Pages


  • 14

Start Page


  • 16

End Page


  • 30

Volume


  • 82

Place Of Publication


  • United Kingdom

Abstract


  • Most constitutive models can only simulate cumulative deformation after a limited number of cycles. However, railroad ballast usually experiences a large number of train passages that cause history-dependent long-term deformation. Fractional calculus is an efficient tool for modelling this phenomenon and therefore is incorporated into a constitutive model for predicting the cumulative deformation. The proposed model is further validated by comparing the model predictions with a series of corresponding experimental results. It is observed that the proposed model can realistically simulate the cumulative deformation of ballast from the onset of loading up to a large number of load cycles.

UOW Authors


  •   Sun, Yifei (external author)
  •   Indraratna, Buddhima (external author)
  •   Carter, John Philip. (external author)
  •   Marchant, Timothy
  •   Nimbalkar, Sanjay S. (external author)

Publication Date


  • 2017

Citation


  • Sun, Y., Indraratna, B., Carter, J. P., Marchant, T. & Nimbalkar, S. (2017). Application of fractional calculus in modelling ballast deformation under cyclic loading. Computers and Geotechnics, 82 16-30.

Scopus Eid


  • 2-s2.0-84990065062

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7268&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/6238

Number Of Pages


  • 14

Start Page


  • 16

End Page


  • 30

Volume


  • 82

Place Of Publication


  • United Kingdom