| 砂土数值建模和有限元分析 |
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| 引用本文： | 李强,王靖涛.砂土数值建模和有限元分析[J].土工基础,2004,18(3):39-42. |
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| 作者姓名： | 李强 王靖涛 |
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| 作者单位： | 华中科技大学土木工程与力学学院,武汉,430074 |
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| 摘 要： | 基于砂土的常规三轴试验,利用岩土本构关系的数值建模方法,建立砂土的弹塑性本构模型。为了该模型的实际工程应用,文中推导了有限元数值计算的弹塑性矩阵,编制了轴对称有限元程序,将本构模型嵌入到有限元程序中,对3种应力路径下砂土的变形过程进行了分析,并将计算结果与试验进行了对比,验证了数值建模方法的有效性。
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| 关 键 词： | 本构模型 数值建模 应力路径 有限元法 |
| 文章编号： | 1004-3152(2004)03-0039-04 |
| 修稿时间： | 2004年3月18日 |
Establishment of Model for Sand and Finite Element Analysis |
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| LI Qiang,WANG Jing-tao.Establishment of Model for Sand and Finite Element Analysis[J].Soie Engineering and Foundation,2004,18(3):39-42. |
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| Authors: | LI Qiang WANG Jing-tao |
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| Abstract: | Based on the conventional triaxial experiments for sand,the elastoplastic constitutive model of sand is built up through the numerical method of modeling the constitutive law for rock and soil. In order to put the model into practical application,the elastoplastic matrix is derived for finite element analysis,and the finite element program of axial symmetry is compiled,in which the constitutive model is inserted. The deformations under three stress paths have been calculated. By comparing the results for experiments and computations,the effectiveness of this numerical method for modeling constitutive law has been verified. |
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| Keywords: | constitutive relations numerical modeling stress path finite element analysis |
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