- Title
- Application of fractional calculus in modelling ballast deformation under cyclic loading
- Creator
- Sun, Yifei; Indraratna, Buddhima; Carter, John P.; Marchant, Timothy; Nimbalkar, Sanjay
- Relation
- Computers and Geotechnics Vol. 82, Issue February, p. 16-30
- Publisher Link
- http://dx.doi.org/10.1016/j.compgeo.2016.09.010
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2017
- Description
- 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.
- Subject
- ballast; constitutive relations; cyclic loading; fractional calculus
- Identifier
- http://hdl.handle.net/1959.13/1391975
- Identifier
- uon:33315
- Identifier
- ISSN:0266-352X
- Language
- eng
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