CaltechAUTHORS
  A Caltech Library Service

Predicting the initiation of static liquefaction of cross-anisotropic sands under multiaxial stress conditions

Lü, Xilin and Huang, Maosong and Andrade, José E. (2017) Predicting the initiation of static liquefaction of cross-anisotropic sands under multiaxial stress conditions. International Journal for Numerical and Analytical Methods in Geomechanics, 41 (17). pp. 1724-1740. ISSN 0363-9061. https://resolver.caltech.edu/CaltechAUTHORS:20171130-075335618

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:20171130-075335618

Abstract

Experimental evidence has shown that the liquefaction instability of sands can be affected by its material density, stress state, and inherent anisotropy. In order to predict the initiation of the static liquefaction of inherent cross-anisotropic sands under multidimensional stress conditions, a rational constitutive model is needed. An elastoplasticity model able to capture the influences of intermediate principal stress ratio (b = (σ_2 – σ_3)/(σ_1 – σ_3)) and loading direction on stress–strain relationships and volumetric properties was proposed. The yield function was formulated to be controlled by Lode angle, loading direction, and material state; the stress–dilatancy was a material state-dependent function. After using the existing drained hollow cylinder tests to validate the proposed model, this model was used to simulate the existing undrained hollow cylinder tests. During this simulation, the second-order work criterion was used to determine the initiation of static liquefaction. The results showed that an increase in both the intermediate principal stress ratio and the loading angle induces a decrease in the second-order work. Static liquefaction is initiated more easily at a stress state with a large intermediate principal stress ratio and a large loading angle, and the mobilized friction angle at the instability points decreases with the intermediate principal stress ratio and the loading angle.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1002/nag.2697DOIArticle
http://onlinelibrary.wiley.com/doi/10.1002/nag.2697/abstractPublisherArticle
ORCID:
AuthorORCID
Lü, Xilin0000-0003-1045-6047
Additional Information:© 2017 John Wiley & Sons, Ltd. Issue online: 15 November 2017; Version of record online: 11 May 2017; Manuscript Accepted: 2 April 2017; Manuscript Revised: 23 March 2017; Manuscript Received: 4 April 2016. Funded by: National Science Foundation of China. Grant Number: 11372228; National Key Research and Development Program. Grant Number: 2016YFC0800202; National Science Foundation of China. Grant Number: 41672270; National Natural Science Foundation of China. Grant Number: U1433123.
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China11372228
National Key Research and Development Program2016YFC0800202
National Natural Science Foundation of China41672270
National Natural Science Foundation of ChinaU1433123
Subject Keywords:static liquefaction; sands; cross-anisotropy; material state; intermediate principal stress ratio
Issue or Number:17
Record Number:CaltechAUTHORS:20171130-075335618
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20171130-075335618
Official Citation:Lü, X., Huang, M., and Andrade, J. E. (2017) Predicting the initiation of static liquefaction of cross-anisotropic sands under multiaxial stress conditions. Int. J. Numer. Anal. Meth. Geomech., 41: 1724–1740. doi: 10.1002/nag.2697
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:83584
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:30 Nov 2017 16:55
Last Modified:09 Mar 2020 13:19

Repository Staff Only: item control page