Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.cageo.2006.02.011
Title: A damage-softening statistical constitutive model considering rock residual strength
Authors: Wang, Z.-L.
Li, Y.-c.
Wang, J.G. 
Keywords: Damage-softening
Mesoscopic element
Microcracks
Rock residual strength
Strength criterion
Weibull distribution
Issue Date: Jan-2007
Source: Wang, Z.-L., Li, Y.-c., Wang, J.G. (2007-01). A damage-softening statistical constitutive model considering rock residual strength. Computers and Geosciences 33 (1) : 1-9. ScholarBank@NUS Repository. https://doi.org/10.1016/j.cageo.2006.02.011
Abstract: Under stress, the microcracks in rock evolve (initiation, growth and coalescence) from damage to fracture with a continuous process. In order to describe this continuous process, a damage-softening statistical constitutive model for rock was proposed based on the Weibull distribution of mesoscopic element strength. This model usually adopts the Drucker-Prager criterion as its distribution parameter of mesoscopic element strength, which may produce larger damage zone in numerical simulations. This paper mainly studies the effects of strength criteria and residual strength on the performance of this damage-softening statistical constitutive model of rock. Main works include following three aspects: Firstly, the mechanical behaviors of rock are comparatively studied when the Drucker-Prager and the Mohr-Coulomb criteria are employed, respectively, as the distribution parameter. Then, a coefficient is introduced to make this constitutive model be capable of describing the residual strength of rock. Finally, a user-defined subroutine is concisely developed for this model and checked through typical strain paths. The current work lays a good foundation for further application of this model in geotechnics and geosciences. © 2006 Elsevier Ltd. All rights reserved.
Source Title: Computers and Geosciences
URI: http://scholarbank.nus.edu.sg/handle/10635/54049
ISSN: 00983004
DOI: 10.1016/j.cageo.2006.02.011
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

47
checked on Dec 13, 2017

WEB OF SCIENCETM
Citations

43
checked on Nov 16, 2017

Page view(s)

62
checked on Dec 10, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.