CONSTANTS FOR AN ELASTIC PLASTIC CAP MODEL FOR LIMESTONE

被引：4
作者：
CHU, HS
BRANDT, H
机构：
[1] Univ of California, Davis, CA, USA, Univ of California, Davis, CA, USA
来源：
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS | 1987年 / 11卷 / 02期
关键词：
ELASTOPLASTICITY - MATHEMATICAL MODELS - ROCK - Testing - STRESSES - Strain;
D O I：
10.1002/nag.1610110208
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Triaxial fracture tests with overburden pressures ranging from 0. 69 to 136 MPa were performed to determine the material parameters involved in a cap model for limestone. Three material parameters A,B and C, were evaluated through Powell's optimization method and the remaining parameters through simulation-curve fitting procedure. The resulting cap model was tested against separate triaxial fracture and hydrostatic compression tests. Modification of the original hardening function, as proposed by F. DiMaggio and I. Sandler, provided an improved fit for the experimental data.
引用
收藏
页码：193 / 202
页数：10
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