CaltechAUTHORS
  A Caltech Library Service

A novel and general form of effective stress in a partially saturated porous material: The influence of microstructure

Vlahinić, Ivan and Jennings, Hamlin M. and Andrade, José E. and Thomas, Jeffrey J. (2011) A novel and general form of effective stress in a partially saturated porous material: The influence of microstructure. Mechanics of Materials, 43 (1). pp. 25-35. ISSN 0167-6636 . https://resolver.caltech.edu/CaltechAUTHORS:20110323-164417570

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20110323-164417570

Abstract

A recently published constitutive model for drying of a partially saturated porous material is extended to take into account finite air (gas) pressure as well as finite external load, variables that are absent during simple drying under atmospheric conditions. We further use the result to derive a general form of effective stress in a partially saturated material. The proposed framework overcomes a primary shortcoming of the classic Bishop effective stress expression and offers a novel way to incorporate important morphological features. In addition, we show how existing micromechanical homogenization techniques aided by basic descriptions of material morphology may be used to inform the study of elastic deformations in the partially saturated media. We further show that for two very specific schemes, and thus for two particular morphologies of porous materials, the proposed effective stress framework remarkably reduces to a volumetric average pressure form which is commonly encountered in literature. In this work, we also provide an extensive discussion and critique of the classic Bishop effective stress approach.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.mechmat.2010.09.007DOIUNSPECIFIED
http://www.sciencedirect.com/science/article/B6TX6-51H1DD5-1/2/55c54c61f6b795aae0139e0dec9d4eb2PublisherUNSPECIFIED
Additional Information:© 2010 Elsevier Ltd. Received 28 September 2009; revised 19 September 2010. Available online 18 November 2010.
Subject Keywords:Effective stress; Partially saturated/unsaturated material; Porous material; Micro-mechanics
Issue or Number:1
Record Number:CaltechAUTHORS:20110323-164417570
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20110323-164417570
Official Citation:Ivan Vlahinic, Hamlin M. Jennings, Jose E. Andrade, Jeffrey J. Thomas, A novel and general form of effective stress in a partially saturated porous material: The influence of microstructure, Mechanics of Materials, Volume 43, Issue 1, January 2011, Pages 25-35, ISSN 0167-6636, DOI: 10.1016/j.mechmat.2010.09.007.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:23084
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:24 Mar 2011 20:53
Last Modified:03 Oct 2019 02:43

Repository Staff Only: item control page