岩土力学2012，Vol.33Issue(7)：2174-2180,7.
岩体黏弹性蠕变计算的高阶数值流形法研究
Study of high-order numerical manifold method in viscoelastic creep of rock mass
摘要
Abstract
The numerical manifold method is a new developed numerical method and has been used in many fields of geotechnical engineering. But there is no research on numerical manifold method in creep. In recent years, the study of high-order manifold method shows that using high-order cover function could improve accuracy of manifold method in complex geotechnical engineering. The research on high-order numerical manifold method in creep is presented. The "time step-initial strain" method is combined with high-order numerical manifold method to simulate the creep of rock. Based on generalized Kelvin model, some relation equations are given; and a new code is developed. Some examples are used to check the feasibility and rationality of the method. The result shows that the high-order numerical manifold method could simulate the creep of viscoelastic rock very well combining with "time step-initial strain". It can improve accuracy of the solution only by using high-order cover function but without changing the mesh density.关键词
高阶数值流形法/黏弹性/蠕变/时步-初应变Key words
high-order numerical manifold method/ viscoelasticity/ creep/ time step-initial strain分类
数理科学引用本文复制引用
刘建,陈佺..岩体黏弹性蠕变计算的高阶数值流形法研究[J].岩土力学,2012,33(7):2174-2180,7.基金项目
国家自然科学基金资助项目(No.40672192,50479072) （No.40672192,50479072）
水利部公益性行业科研专项项目(No.201001009) （No.201001009）
国家重点基础研究发展规划973项目(No.2009CB724603). （No.2009CB724603）
