A SINGLE-SURFACE YIELD FUNCTION FOR GEOMATERIALS

被引：86
作者：
EHLERS, W
机构：
[1] Institut für Mechanik (III), Technische Hochschule Darmstadt, Darmstadt, D-64289
来源：
ARCHIVE OF APPLIED MECHANICS | 1995年 / 65卷 / 04期
关键词：
POROUS MEDIA; GEOMATERIALS; YIELDING; HARDENING; FAILURE; COHESION; PHASE CHANGE;
D O I：
10.1007/BF00805464
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The article outlines a seven-parametric yield function for geomaterials such as soils and rocks. Proceeding from a geometric representation in the principal stress space, the yield surface exhibits a closed shape, thus reflecting the sensitivity of the plastic response of this type of media to hydrostatic stresses. The yield function is able to describe the effects of primary yielding, as well as of isotropic and kinematic hardening. In addition the failure envelope contains an open cone when the number of material parameters is reduced from seven to five.
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页码：246 / 259
页数：14
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