Global and local sensitivity analyses for coupled thermo–hydro–mechanical problems

Global and local sensitivity analyses for coupled thermo–hydro–mechanical problems
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耦合热-水-机械问题的全局和局部敏感性分析

DOI:
10.1002/nag.2573
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发表时间:
2016
影响因子:
4
通讯作者:
Schanz
Schanz
中科院分区:
工程技术2区
文献类型:
--
作者:
Nguyen-Tuan;Lahmer;Datcheva;Schanz

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本文采用局部和全局灵敏度方法对热-水-力耦合问题进行了灵敏度分析。基于导数的方法用于局部灵敏度方法,而随机平衡设计方法用于全局灵敏度分析。其主要目标是调查的非线性耦合热-水-力学分析的非饱和土的行为,其建模通常涉及大的本构关系的结果的本构参数的不确定性的影响。了解参数灵敏度可以定性评估高风险情况下的计算模拟结果的有效性,例如新兴的核废料处置库。版权所有© 2016约翰威利父子有限公司.
This paper focuses on the sensitivity analysis for coupled thermo–hydro–mechanical problems employing both local and global sensitivity methods. A derivative‐based method is used in the local sensitivity approach, whereas the random balance designs method is used for the global sensitivity analysis. The main goal is to investigate the effect of uncertainties in the constitutive parameters on the results from nonlinear coupled thermo–hydro–mechanical analyses of unsaturated soil behavior whose modeling generally involves large sets of constitutive relations. Knowing the parameter sensitivity allows to qualitatively assess the validity of the results obtained by computational simulations of high‐risk situations, for example, emerging nuclear waste repositories. Copyright © 2016 John Wiley & Sons, Ltd.
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影响因子: 5.3
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