摘要
各向异性材料模型的一般计算方法需要编辑偏轴坐标系中的弹性矩阵,其推导过程十分复杂.针对这一问题,提出了一种基于FEM软件中两个坐标系(基本坐标系与辅助坐标系)的新方法.FEM软件自动转换两个坐标系的关系,因此该方法没必要编辑偏轴坐标系中的弹性矩阵,可简化各向异性模型的计算过程.计算结果很好地反映了各向异性材料的方向变化对巷道围岩应力分布的影响.
The derivation of elastic strength matrix in partial coordinate system for anisotropic modelling is very difficult. To solve this problem, a new method was suggested on the basis of the two coordinate systems in FEM software. The FEM software converts automatically the relation between two coordinate systems, thus the derivation of elastic strength matrix in partial coordinate system is avoided, and the calculation process of the anisotropic model was simplified. The calculation results can reflect well the effect of the direction of anisotropic rock material on stress distribution of the tunnel.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第10期1479-1482,共4页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(50874024
10872046
50904013
51174045)
中央高校基本科研业务费专项资金资助项目(N090601003
N100601003)
关键词
各向异性
巷道
应力与变形
数值模拟
偏轴坐标系
anisotropy
tunnel
stress and deformation
numerical simulation
partial coordinate system
