Computer Aided Calibration, Benchmarking and Check-Up of Constitutive Models for Soils. Some Conclusions for Neohypoplasticity
Computer Aided Calibration, Benchmarking and Check-Up of Constitutive Models for Soils. Some Conclusions for Neohypoplasticity
复制标题
土壤本构模型的计算机辅助校准、基准测试和检查。
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
C. Grandas
中科院分区：
文献类型：
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作者：
A. Niemunis;C. Grandas
提出了一种本构模型的计算机辅助标定、基准和测试方法。以卡尔斯鲁厄砂土的大量试验数据和新亚塑性模型为例进行了分析。该程序的基本特征是对测试和模拟之间的差异进行自动评估。它们可以通过修改材料常量来最小化，也可以用作不同模型的基准。除了曲线拟合部分，还可以检查本构模型是否违反第二定律。为此，尝试了几种特殊设计的应力环。建立了所有状态变量的摇摆。以新亚塑性和正压低弹性为例进行了热力学试验。综上所述，本文提出了对肿瘤发育不良模型的几点修正。
A computer aided calibration, benchmarking and testing of constitutive models is presented. A large collection of test data for Karlsruhe sand is used together with the neohypoplastic model as an example. The essential feature of the procedure is an automatic evaluation of the discrepancies between a test and its simulation. They can be minimized by modifications of material constants or used as a benchmark for different models. Apart from the curve-fitting part one may check whether a constitutive model violates the Second Law. For this purpose several specially designed stress loops are tried out. A shake down of all state variables is established. The neohypoplasticity and the barotropic hypoelasticity are used as examples in the thermodynamic tests. In conclusion several modification to neohypoplastic models are presented.
影响因子：
2.4
作者：
Gudehus, Gerd;Jiang, Yimin;Liu, Mario
通讯作者：
Liu, Mario
影响因子：
5.7
作者：
T. Wichtmann;T. Triantafyllidis
通讯作者：
T. Wichtmann;T. Triantafyllidis
影响因子：
4
作者：
Wichtmann;Niemunis;Triantafyllidis
通讯作者：
Triantafyllidis