| 砂土液化大变形本构模型及在ABAQUS软件上的实现 |
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| 引用本文： | 庄海洋,陈国兴.砂土液化大变形本构模型及在ABAQUS软件上的实现[J].世界地震工程,2011,27(2). |
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| 作者姓名： | 庄海洋 陈国兴 |
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| 作者单位： | 南京工业大学,岩土工程研究所,江苏南京,210009 |
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| 基金项目： | 国家自然科学基金项目(50808100); 江苏省高校自然科学基金项目(07KJB560040) |
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| 摘 要： | 基于Yang和E lgam al等人提出的砂土液化大变形本构模型,对该模型的建立过程进行了详细的推导,基于新的嵌套屈服面硬化规则,对原有模型的硬化规则的不连续性做了改进,把该本构模型扩展应用到三维液化大变形的数值分析中,实现了基于ABAQUS大型商用软件计算平台上砂土液化大变形的计算子程序的开发,基于该计算平台和开发的本构模型,对动三轴试验体系中砂土试样的液化过程进行了数值试验分析,给出了试验过程中试样的竖向动位移、整体竖向应力应变关系滞回曲线和动孔压时程曲线的数值计算结果。文中初步验证了该模型在ABAQUS上开发的子程序的可靠性和数值计算模型的可行性,模型的可靠性及其子程序的稳定性还需通过试验结果和数值计算结果的对比分析与进一步验证。
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| 关 键 词： | 砂土液化 本构模型 数值模拟 大变形 |
Constitutive model for large liquefaction deformation of sand and its implementation in ABAQUS software |
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| ZHUANG Haiyang,CHEN Guoxing.Constitutive model for large liquefaction deformation of sand and its implementation in ABAQUS software[J].World Information On Earthquake Engineering,2011,27(2). |
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| Authors: | ZHUANG Haiyang CHEN Guoxing |
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| Institution: | ZHUANG Haiyang,CHEN Guoxing (Ins titute of Geotechnical Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | Based on the constitutive equations for large deformation of sand given by Yang and Elgamal,et al,the constitutive equations are drived in details,and the harden rule of model is advanced based on the harden rule of memorial nested yield surface.The model is extended to 3-D equations.This advanced model is implemented by using FORTRAN subroutine program and is implanted into ABAQUS finite-element software.By using ABAQUS software with the advanced model,the dynamic response of sand soil samples was tested b... |
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| Keywords: | sand liquefaction constitutive model numerical method large deformation |
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