EXPERIMENTAL AND NUMERICAL INVESTIGATIONS ON TRANSIENT CREEP OF POROUS CHALK

被引：53

作者：

DAHOU, A ^{[1
]}

SHAO, JF ^{[1
]}

BEDERIAT, M ^{[1
]}

机构：

[1] CNRS,URA 1441,MECAN LILLE LAB,VILLENEUVE DASCQ,FRANCE

来源：

MECHANICS OF MATERIALS | 1995年 / 21卷 / 02期

关键词：

CREEP; PLASTICITY; VISCOPLASTICITY; POROUS ROCKS; CHALK; MODELING;

D O I：

10.1016/0167-6636(95)00004-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A set of hydrostatic and triaxial creep tests has been performed on a white porous chalk. The results obtained show important creep deformations in this rock. In the present paper we study the transient creep only, since in the time intervals considered it was the only one exhibited by the rock. A constitutive equation is developed using the general theory proposed by Cristescu (1994, Int. J. Plasticity 10(2), 103-132). The yield function and viscoplastic potential are determined from the data obtained in creep tests. The procedure for the determination of the model parameters is directly related to the way in which the model is step by step build up. Comparisons between the model predictions and the experimental data will be shown.

引用

页码：147 / 158

页数：12

共 18 条

[1] A PROCEDURE TO DETERMINE NONASSOCIATED CONSTITUTIVE-EQUATIONS FOR GEOMATERIALS [J].