Lower Bound Limit Analysis of Anisotropic Soils

• 作者: Chunguang Li Cong Sun Cuihua Li Hong Zheng
• 来源期刊: 计算机、材料和连续体(英文)
• 学科: 数学
• 关键词: LIMIT analysis LOWER BOUND finite element ANISOTROPY
• 年，卷（期）: 2018,（1）
• 页码范围: 21-41
• 页数: 21页
• 分类号: O17

摘要

Previous approaches can only tackle anisotropic problems with cohesion varying with direction.A novel linearization of the Mohr-Coulomb yield criterion associated with plane strain problem has been achieved by simulating the Mohr’s circle with orientation lines inσ-τspace,which allows for lower bound solution of soils with cohesion and friction coefficient varying with direction.The finite element lower limit analysis formulation using the modified anisotropic yield criterion is then developed.Several examples are given to illustrate the capability and effectiveness of the proposed numerical procedure for computing rigorous lower bounds for anisotropic soils.