[article] 
inJournal of engineering mechanics > Vol. 136 N° 6 (Juin 2010) . - pp. 777-786

Titre :	Modeling stress-dilatancy for sand under compression and extension loading conditions
Type de document :	texte imprimé
Auteurs :	Chang, Ching S., Auteur ; Zhen-Yu Yin, Auteur
Article en page(s) :	pp. 777-786
Note générale :	Mécanique appliquée
Langues :	Anglais (eng)
Mots-clés :	Sand Soil type Micromechanics Plasticity Dilatancy Compression Load factors.
Résumé :	Experimental results show very different stress-dilatancy behavior for sand under compression and extension loading conditions. In order to describe the behavior in both compression and extension conditions, two separate dilatancy equations are needed; one for each case. Furthermore, the effect of inherent anisotropy has not been considered in those equations. In this paper, a new micromechanics based method is presented, by which the stress dilatancy relation is obtained by considering the slip mechanism of the interparticle contacts in all orientations. The method also accounts for the effect of inherent anisotropy in sand. Experimental results on Hostun sand and LSI-30 sand are used for illustration the proposed method.
DEWEY :	620.1
ISSN :	0733-9399
En ligne :	http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...]

[article] Modeling stress-dilatancy for sand under compression and extension loading conditions [texte imprimé] / Chang, Ching S., Auteur ; Zhen-Yu Yin, Auteur . - pp. 777-786.
Mécanique appliquée
Langues : Anglais (eng)
in Journal of engineering mechanics > Vol. 136 N° 6 (Juin 2010) . - pp. 777-786

Mots-clés :	Sand Soil type Micromechanics Plasticity Dilatancy Compression Load factors.
Résumé :	Experimental results show very different stress-dilatancy behavior for sand under compression and extension loading conditions. In order to describe the behavior in both compression and extension conditions, two separate dilatancy equations are needed; one for each case. Furthermore, the effect of inherent anisotropy has not been considered in those equations. In this paper, a new micromechanics based method is presented, by which the stress dilatancy relation is obtained by considering the slip mechanism of the interparticle contacts in all orientations. The method also accounts for the effect of inherent anisotropy in sand. Experimental results on Hostun sand and LSI-30 sand are used for illustration the proposed method.
DEWEY :	620.1
ISSN :	0733-9399
En ligne :	http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...]