重力坝应力的临界能量误差限自适应有限元分析

本文应用自适应有限元法对重力坝应力的能量误差限进行了研究。通过对不同坝高,不同上游、下游坡比等多种形状重力坝坝体的应力分析,得出在重力坝应力分析过程中存在临界能量误差限,该误差限对不同坝体外形会有微小变化。该结果将会有助于重力坝坝体有限元应力分析和建立重力坝有限元分析标准。

Analysis of critical global energy error limit of gravity dam stresses using adaptive finite element method

In this paper, the research on energy error limit of gravity dam stress analysis using adaptive finite element method （FEM） has been carried out. Through the stress analyses in many types of gravity dams with different dam height and its downstream and upstream slops the conclusion has been made that there exists a critical global energy error limit （CGEEL） in the course of dam stress analysis. Although variation of its value is slightly for various geometry of dam, the variation is small enough so that it does not affect CGEEL. It will be helpful for FEM analysis of gravity dam.