摘要
利用细观力学的Eshelby等效夹杂方法建立了岩石的弹塑性损伤统计本构模型,在该模型中采用了总体应变与各组成相间应变关系与总体应力与各组成相间应力关系不一样的假设,并用最优化方法确定该模型参数。建立的模型能够反映岩石破坏前应力-应变关系和轴向应变-横向应变关系,与试验结果比较表明该模型是合理的。
Using the Eshelby equivalent inclusion method, a statistical constitutive model for elastoplastic and damaged rock is set up, which can reflect the relation between stress and strain and the relation between axial strain and traverse strain before the rock fails. The hypothesis that the relation between the total strain and the strains in phases and the relation between the total stress and the stresses in phases are different, is employed. An optimization method is developed to determine the parameters of the constitutive model. The presented model is verified by the experiments.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第12期1971-1975,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
国家重点基础研究发展规划(973)项目(2002CB412704
2002CB412707)
国家自然科学基金(50374064
50334060)资助项目。
关键词
岩石力学
损伤
统计
本构模型
Elastoplasticity
Mathematical models
Optimization
Rock mechanics
Statistics
Strain
Stresses
