基于有限元法的E-K模型参数敏感性分析

Sensitivity Analysis on E-K Model Parameter Based on FEM

模型参数的确定是数值分析过程中的重要环节,合理把握参数的选取原则,可大大提高结构分析的可靠度以及参数反分析的计算效率.本文借助有限单元法考察了E-K模型参数变化对一个均质堤坝的位移和应力值的影响程度.通过分析明确了E-K模型中各参数对计算结果的敏感程度,同时提出了模型参数的选取原则.

The acquisition of model parameter is an important step during numerical calculation.Holding rationally the acquisition principal of parameter can improve the reliability of structure analysis and the calculation efficiency of parameter back-analysis.The effect on displacement and stress of homogeneous embankment because of parameter value change of E-K model is discussed in virtue of FEM in this paper.And the sensitivity of E-K model parameters to the calculation result is made a clear and the acquisition principal of model parameter is presented in this paper.