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Presentation
Development and application of constitutive model for railway ballast
Faculty of Engineering - Papers (Archive)
  • Buddhima Indraratna, University of Wollongong
  • Wadud Salim, University of Wollongong
  • Cholachat Rujikiatkamjorn, University of Wollongong
RIS ID
18709
Publication Date
5-1-2007
Publication Details

This paper was originally published as: Indraratna, B, Wadud, S & Rujikiatkamjorn, C, Development and application of constitutive model for railway ballast, in Yin, JH, Li, XS, Yeung, AT & Desai, CS (eds.), International Workshop on Constitutive Modelling, Hong Kong, January 2007, 685-696.

Abstract
This Discussion Paper includes an elasto-plastic stress-strain constitutive model developed at the University of Wollongong, Australia, for coarse granular aggregates such as ballast, incorporating the degradation of particles as a particular feature. An attempt has also been made to extend the monotonic loading model to a cyclic stress-strain relationship. Most available constitutive models do not consider the breakage of particles during shearing, and the effects of cyclic loading on particle degradation and plastic deformation are rarely found in the literature. The developed model is based on the critical state framework and is able to predict the stress-strain and volume change behavior of coarse granular aggregates accurately. The model well captures the plastic dilation and contraction features under various confining pressures, and the strain-hardening and post-peak strain-softening behavior is adequately simulated.
Link to publisher version (URL)
International Workshop on Constitutive Modelling
Disciplines
Citation Information
Buddhima Indraratna, Wadud Salim and Cholachat Rujikiatkamjorn. "Development and application of constitutive model for railway ballast" (2007)
Available at: http://works.bepress.com/crujikiatkamjorn/20/