摘要
采用罚方法将界面约束引入三维块体系统非连续变形分析总体平衡方程,详细推导了摩擦接触子矩阵并给出了接触状态(张开、滑动和固定)模式变化准则及开-闭迭代操作。物理模型试验和节理岩体边坡楔形破坏的仿真模拟表明,该方法是有效的。
Discontinuous deformation analysis (DDA) method for 3D frictional contact problems is developed and frictional contact submatrices are derived by using penalty method. Also the open-close iteration criteria and operations performed for different changes in contact state are given. Sliding at a contact can occur in any direction parallel to the contact face, as supposed to one of two directions in 2D discontinuous deformation analysis. Two representative validation cases are given. Comparing the 3D DDA results for these cases with physical modeling test and simulation of wedge failures of jointed rock slope, has shown the validity of the method and contact formulas for 3D DDA.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2002年第A02期2418-2421,共4页
Chinese Journal of Rock Mechanics and Engineering
关键词
数值分析
非连续变形分析
三维摩擦接触
罚方法
numerical analysis
discontinuous deformation analysis
3D frictional contact
penalty method
