Improvement of Thermomechanical Model for Soil and Its FEM Analysis

Improvement of Thermomechanical Model for Soil and Its FEM Analysis
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土体热力模型的改进及其有限元分析

DOI:
10.1061/41101(374)15
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发表时间:
2010-05
期刊:
Geotechnical Special Publication
影响因子:
--
通讯作者:
花丽坤
花丽坤
中科院分区:
其他
文献类型:
--
作者:
孔亮;李学丰;花丽坤

文献摘要

参考文献

相似文献

采用热力学方法建立岩土材料弹塑性本构模型,不仅具有严密的数学结构,而且自动满足热力学规律,具有严格的数学和物理基础。简要介绍并详细分析了Collins(2002,2005a)提出的各向同性热机械模型。针对其硬化规律的不足,该模型引入了统一的硬化参数。然后,该模型被扩展为适用于粘土和沙子的统一土壤热力模型。编制了热力模型的有限元计算机程序和改进的统一模型。通过计算结果的对比分析可以看出改进模型的适应性和有效性。
The thermomechanical approach to establishing elastic/plastic constitutive model for geomaterials not only has a tight mathematical structure, but also satisfies the laws of thermo-dynamics automatically and has a rigorous mathematic and physical basis. The isotropic thermomechanical model proposed by Collins (2002, 2005a) is introduced briefly and analyzed in detail. Aiming at its shortage of hardening law, the unified hardening parameter is incorporated into this model. And then, the model is extended to a unified thermomechanical model for soil which can be applied to both clay and sand. The FEM computer program of thermomechanical model and improved unified model are worked out. The adaptability and validity of improved model can be seen from the comparison and analysis of calculated results.
DOI: 10.1680/geot.2005.55.5.373
发表时间: 2005-06
期刊: Geotechnique
影响因子: 5.8
作者:
I. Collins
通讯作者: I. Collins
DOI: 10.1002/nag.247
发表时间: 2002-11
影响因子: 4
作者:
Ian F. Collins;T. Hilder
通讯作者: Ian F. Collins;T. Hilder
DOI: 10.1680/geot.55.5.373.66023
发表时间: 2005-06-01
期刊: GEOTECHNIQUE
影响因子: 5.8
作者:
Collins, IF
通讯作者: Collins, IF
DOI: 10.1098/rspa.1997.0107
发表时间: 1997-09-08
影响因子: 3.5
作者:
Collins, IF;Houlsby, GT
通讯作者: Houlsby, GT
具有独立于应力路径的硬化参数的粘土和砂的统一本构模型
DOI: 10.1016/j.compgeo.2007.04.003
发表时间: 2008-03
影响因子: 5.3
作者:
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通讯作者: Y.P. Yao;D.A.Sun;H.Matsuoka