西南交通大学学报2018，Vol.53Issue(3)：582-588,7.DOI:10.3969/j.issn.0258-2724.2018.03.020
土石料双屈服面弹塑性模型的二次开发算法与应用
Algorithm Development and Application of Double-Yield-Surface Elastoplastic Constitutive Model for Earth-Rock Materials
摘要
Abstract
To enrich the constitutive models of geotechnical materials in universal commercial finite-element analysis software suites,e.g. ADINA,ABAQUS,and ANSYS,and to improve the precise simulation ability for certain geotechnical structures,Shen's double-yield-surface elastoplastic model was chosen as an example to introduce in detail the secondary development process of a constitutive model in commercial finite-element software. The stress integration algorithms were modified,and the superiority of the algorithms was investigated by comparing the numerical simulation with triaxial test data for coarse-grained soil. Further,an ideal concrete-face rockfill dam was used to validate the accuracy of the secondary development process and the algorithms. Finally,the numerical simulation of a practical concrete-face rockfill dam was conducted. The results indicate that the stress integration algorithms and the secondary development process presented in this study are universal and can be employed for the secondary development of double or multi-yield-surface elastoplastic models in universal finite-element analysis software.关键词
双屈服面弹塑性模型/本构积分算法/二次开发/三轴试验/土石坝Key words
double-yield-surface elastoplastic constitutive model/integration algorithms/secondary development/triaxial test/earth-rock dam分类
数理科学引用本文复制引用
岑威钧,陈司宁,邓同春,熊堃..土石料双屈服面弹塑性模型的二次开发算法与应用[J].西南交通大学学报,2018,53(3):582-588,7.基金项目
国家自然科学基金资助项目(51009055) （51009055）
江苏高校优势学科建设工程资助项目(YS11001) （YS11001）
