Integration and Calibration of a Plasticity Model for Granular Materials

机译：颗粒材料塑性模型的集成与标定

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A new macroscopic plasticity model for non-cohesive granular materials, with the focus on coarse-sized materials (railway ballast), is presented. The corresponding incremental relations are reformulated in the space of stress invariants that is extended with the internal (hardening) variables and the corresponding dissipative stresses. The model is calibrated using data from Conventional Triaxial Compression (CTC) tests. A function evaluation method is used for the optimization. A "multi-vector" strategy for choosing the appropriate start vector is proposed.

机译：提出了一种新的非粘性颗粒材料的宏观可塑性模型，重点是粗粒材料（铁路道ast）。相应的增量关系在应力不变量的空间中重新构造，该空间随内部（硬化）变量和相应的耗散应力而扩展。使用来自常规三轴压缩（CTC）测试的数据对模型进行校准。函数评估方法用于优化。提出了一种用于选择合适的起始向量的“多向量”策略。

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《IUYAM Symposium on Theoretical and Numerical Methods in Continuum Mechanics of Porous Materials, Sep 5-10, 1999, Stuttgart, Germany》|1999年|p.215-220|共6页
会议地点 Stuttgart(DE)
作者
L. Jacobsson; K. Runesson;
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作者单位

Department of Solid Mechanics, Chalmers University of Technology, SE-412 96 Goeteborg, Sweden;

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原文格式 PDF
正文语种 eng
中图分类一般工业技术;
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专利

1. Characteristic state plasticity for granular materials Part II: Model calibration and results [J] . Ahadi A., Krenk S. International Journal of Solids and Structures . 2000,第43期

机译：颗粒材料的特征状态可塑性第二部分：模型校准和结果
2. Characteristic state plasticity for granular materials Part II: Model calibration and results [J] . Ahadi A., Krenk S. International Journal of Solids and Structures . 2000,第43期

机译：颗粒材料的特征状态可塑性第二部分：模型校准和结果
3. Implicit integration of plasticity models for granular materials [J] . Aylin Ahadi, Steen Krenk Computer Methods in Applied Mechanics and Engineering . 2003,第31a32期

机译：粒状材料塑性模型的隐式集成
4. Integration and calibration of a plasticity model for granular materials [C] . L. Jacobsson, K. Runesson IUTAM symposium on theoretical and numerical methods in continuum mechanics of porous materials . 2001

机译：颗粒材料塑性模型的集成与校准
5. Modelling unsaturated granular pavement materials using bounding surface plasticity. [D] . Heath, Andrew Craig. 2002

机译：使用边界表面可塑性对不饱和粒状路面材料进行建模。
6. Structural and topological nature of plasticity in sheared granular materials [O] . Yixin Cao, Jindong Li, Binquan Kou, -1

机译：剪切颗粒材料中塑性的结构和拓扑性质
7. Implicit integration of plasticity models for granular materials [O] . Ahadi Aylin, Krenk Steen 2003

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8. Plasticity Model for Flow of Granular Materials under Triaxial Stress States. [R] . Dorris, J. F., Nemat-Nasser, S. 1982

机译：三轴应力状态下颗粒材料流动的塑性模型。

Integration and Calibration of a Plasticity Model for Granular Materials

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