| 冻粘土蠕变损伤耦合本构关系研究 |
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| 引用本文： | 李栋伟,汪仁和,胡璞.冻粘土蠕变损伤耦合本构关系研究[J].冰川冻土,2007,29(3):446-449. |
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| 作者姓名： | 李栋伟 汪仁和 胡璞 |
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| 作者单位： | 安徽理工大学,土木工程系,安徽,淮南,232001;安徽省,建设厅,安徽,合肥,230001 |
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| 基金项目： | 安徽省高校青年教师基金项目(2007JQ1044)，安徽省自然科学基金项目(050440501)，安徽理工大学青年教师基金项目(QN200607)，安徽理工大学博士、硕士基金项目资助 |
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| 摘 要： | 以冻土试验为基础,提出了冻粘土服从DP屈服准则的粘塑损伤变量,通过推导得到了相关联流动法则下的冻土粘弹塑性损伤耦合本构方程.为了研究粘弹塑性和损伤的耦合作用,将建立的冻土材料粘弹塑性损伤耦合本构模型,通过用户子程序嵌入到ADINA有限元中.结果表明:粘弹塑损伤耦合本构模型能较好的模拟冻粘土加速蠕变过程,与实测蠕变吻合较好.
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| 关 键 词： | 冻土 D-P屈服准则 弹粘塑损伤耦合本构方程 ADINA程序 |
| 文章编号： | 1000-0240（2007）03-0446-04 |
| 修稿时间： | 2006-10-252006-12-06 |
Study of Frozen Soil Creep Damage-Coupling Constitutive Function |
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| LI Dong-wei,WANG Ren-he,HU Pu.Study of Frozen Soil Creep Damage-Coupling Constitutive Function[J].Journal of Glaciology and Geocryology,2007,29(3):446-449. |
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| Authors: | LI Dong-wei WANG Ren-he HU Pu |
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| Institution: | Department of Civil Engineering, Anhui University, Science and Technology, Huainan Anhui 232001, China; 2 .The Construction Department of Anhui Province, Hefei Anhui 230001, China |
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| Abstract: | Based on frozen soil experiments and Nishihara Model,The D-P yield standard is used to determine the damage variables of frozen soil;The constitutive relationship of the viscoelastic plastic damage-coupling constitutive function in association with plastic flow law is deduced.The viscoelastic plastic damage-coupling constitutive model for geo-materials is embedded into the commercial FEM software ADINA as a user's subroutine.Comparing the final fitting curves of the triaxial stress creep experiments and the theory calculation indicate that the theoretical result coincides with the experimental ones very well.The model is available for the non-linear accelerative creep of frozen soil. |
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| Keywords: | frozen soil D-P yield standard viscoelastic-plastic damage-coupling constitutive function ADINA FEM |
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