非线性自适应策略及其在岩土工程中的应用

非线性自适应策略及其在岩土工程中的应用 English Version

基金项目: 国家自然科学基金、博后后基金、纪念尹先生教育基金

Shanghai Jiaotong University Hohai University South West Electronic Power Design Institute Chengdu

摘要: 基于邓肯－张本构模型及Ｚｉｅｎｋｉｅｗｉｃｚ－Ｚｈｕ误差估计方法，本文提出一种适应于土与结构物相互作用有限元分析的非线性自适应策略（即在每一级荷载作用下找出最优化的网格，以达到减少离散误差的目的）。研究结果表明，本文提出的非线性自适应策略是有效的，运用该策略后可使土与结构物相互作用的计算精度得到提高
- 自适应策略 /
- 网格生成 /
- 相互作用分析
Abstract: Based on the Duncan-Chang’s constitutive model and Zienkiewicz-Zhu’ s error estimation, a nonlinearadaptive strategy(i.e.,in order to reduce discretional error,an optimal mesh will be find out under eachincremental load.)suitable for the FEM analysis of interaction between soil and structure is presented in this paper.Numerical tests perfiormed with interaction problems have shown that,this nonlinear adaptive strategy is efficientand can be used to improve the accuracy of interaction analysis between soil and structure.
- adaptive strategy /
- mesh generation /
- interaction analysis.