双向粘弹性节理岩体时域等效分析  

Equivalent analysis of orthogonal viscoelastic jointed rock

作　　者：任懿[1] 杨海天[2] 梁赞明[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,石家庄050081 [2]大连理工大学工业装备结构分析国家重点实验室,大连116024

出　　处：《计算力学学报》2013年第S1期205-208,共4页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(10772035;10721062;10472019);973国家重点基础研究规划(2005CB321704)资助项目

摘　　要：以双向粘弹性节理岩体为研究对象,基于一种简单等效假定和自适应算法,并结合有限元方法,得到递推格式的等效本构模型和等效粘弹性场计算模型。通过算例,将等效解与基于ANSYS的非均质解进行比较.从计算精度和效率平衡的角度而言,等效模型的结果是令人满意的。This paper presents a recursion scheme of constitutive model of orthogonal viscoelastic jointed rock mass and FEM recursive solution model of equivalent viscoelastic field.In the solving process,the calculation error can be avoided through the adaptive computation when the size of time step changes.The equivalent analysis of the calculation results and the finite element heterogeneous solutions based on ANSYS are compared through typical example that have been considered in the calculation of different constitutive combination,different joint relative width and orientation,different geometric structures,and different step length.Equivalent model results are satisfactory under the consideration of the calculation precision and the calculation cost.

关 键 词：双向节理岩体 粘弹性 时域 递推 自适应 

分 类 号：O345[理学—固体力学]