基于ABAQUS对D-P准则剪胀角的讨论  

ABAQUS based discussion on dilatancy angle of D-P criterion

作　　者：郝明辉[1] 陈厚群[1] 张艳红[1] 

机构地区：[1]中国水利水电科学研究院,北京100048

出　　处：《水利水电技术》2012年第11期25-27,43,共4页Water Resources and Hydropower Engineering

基　　金：水利部公益性行业科研专项(200901054);国家自然科学基金(51079164);水利部公益性行业专项(201201053)

摘　　要：为了更好地描述岩土材料的强度特性,在M-C准则的基础上出现了D-P准则,在有限元软件ABAQUS中得到了广泛应用。但是D-P准则的参数选取不当,有可能导致计算结果误差较大,为此本文分析了D-P准则的基本特性,给出了平面应变条件下基于非关联流动法则的D-P屈服准则与M-C准则的匹配公式,从而可以得到剪胀角在0～之间的数值,继而研究剪胀角对坝体—地基体系的影响。In order to describe the strength properties of geotechnical materials properly, the D - P criteria is come out on the ba- sis of the M - C criteria, which is widely used in ABAQUS. However, if the parameters of D - P criteria are improperly selected, larger errors may occur from the calculation results. Therefore, the basic characteristics of the D - P criteria is analyzed herein, and then the non-associated flow rule based matching formula between D - P yield criteria and M - C yield criteria under the con- dition of plane strain is given. Thereby, the values between 0 and Фb of dilatancy angle can be obtained, and subsequently, the effect of dilatancy angle on dam-foundation system is studied as well.

关 键 词：M—C准则 D—P准则 剪胀角 

分 类 号：TV31[水利工程—水工结构工程]