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| 土体热力学本构模型的分析与验证 | |
| 引用本文： | 花丽坤,李学丰,孔亮.土体热力学本构模型的分析与验证[J].宁夏大学学报(自然科学版),2009,30(2). |
| 作者姓名： | 花丽坤 李学丰 孔亮 |
| 作者单位： | 1. 宁夏大学,机械工程学院,宁夏,银川,750021 2. 同济大学,地下建筑与工程系,上海,200092 3. 宁夏大学,固体力学研究所,宁夏银川,750021 |
| 基金项目： | 宁夏高等学校科学研究基金，教育部新世纪优秀人才支持计划资助项目 |
| 摘 要： | 分析介绍了Collins提出的土体热力学模型.该模型不仅结构简单,满足热力学原理,且通过参数的不同取值,可得到包括修正剑桥模型在内的不同屈服面的形式,具有较大的适应性和灵活性.基于微细观力学原理,深入分析了模型参数的物理意义,并导出了模型的应力应变关系.编制了该模型的点积分程序,选用具有强减缩特性的淤泥质软黏土的偏压固结不排水三轴试验结果,通过对试验结果的模拟,验证了模型的适应性与有效性. |
| 关 键 词： | 本构模型 热力学 弹塑性 模型验证 |
Analysis and Verification of Thermomechanical Constitutive Model for Soil |
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| Hua Likun,Li Xuefeng,Kong Liang.Analysis and Verification of Thermomechanical Constitutive Model for Soil[J].Journal of Ningxia University(Natural Science Edition),2009,30(2). | |
| Authors: | Hua Likun Li Xuefeng Kong Liang |
| Institution: | 1.School of Mechanical Engineering;Ningxia University;Yinchuan 750021;China;2.Department of Geotechnical Engineering;Tongji University;Shanghai 200092;3.Solid Mechanics Institute;China |
| Abstract: | The thermomechanical constitutive model for soils proposed by Collins is introduced and analyzed firstly.The model not only has a simple structure and satisfies the laws of thermodynamics,but also can be transferred to different yield surface,including modified Cambridge model,by changing the value of parameters.The physical mean of model parameters are analyzed deeply based on the micro-and meso-mechanics.The stress and strain relation is deduced.And then,simulation program of a thermomechanical model are ... |
| Keywords: | constitutive model thermomechanics elasto-plasticity model verification |
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