摘要
本文提出了节理岩体多层弹粘塑性模型的隐式积分算法。对岩石节理组,把节理面上的无拉准则和莫尔-库仑破坏准则作为屈服准则,推导了屈服函数的导数向量(?)和粘塑性应变率的导数矩阵[H]的计算公式,文中并建议了计算节理岩体多层模型时间积分步长的方法。最后用一算例说明了隐式积分算法的应用。
In this paper, the implicit time integration algorithm of elasto-viscoplastic analysis by FEM is proposed for multllaminate model of jointed rocks. For joint sets, non-tension and Mohr-Coulomb criteria are used as yield criteria, and detailed expressions are derived for yield function derivative vector (?) and the viscoplastic strain rate derivative matrix[H], The method of calculating the time integration step length for multilaminate model of jointed rock is also proposed. Finally, the use of the algorithm is illustrated by the solution of an example.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
1990年第6期42-54,共13页
Chinese Journal of Geotechnical Engineering
