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An Elastoplastic Model for Granular Materials Exhibiting Particle Crushing

机译：一种颗粒压碎的颗粒材料的弹性塑料模型

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摘要

A practical elastoplastic constitutive model for granular materials is presented. And the model is suitable for description of the material behaviour for a wide range of stresses, including those sufficient to cause particle crushing. With a limited number of model parameters, the model can predict the confining-pressure dependent stress-strain relation and shear strength of granular materials in three-dimensional stresses, especially of variation of shear strength and dilatancy characteristics due to particle crushing under high confining pressure. The model parameters, which have clear physical meanings, can be determined from the results of isotropic compression test and conventional triaxial compression tests. The model performance is demonstrated for triaxial compression tests of a sand for a wide range of the confining-pressure from 0.2MPa to 8.0MPa.
机译：提出了一种用于颗粒材料的实际弹性塑料本构型模型。并且该模型适用于对宽范围应力的材料行为描述，包括足以引起颗粒压碎的那些。利用有限数量的模型参数，该模型可以预测三维应力中颗粒材料的限制压力依赖性应变关系和剪切强度，特别是由于高限制压力下颗粒压碎引起的剪切强度和膨胀特性的变化。具有明确物理含义的模型参数可以从各向同性压缩测试和传统三轴压缩测试的结果确定。对于砂的三轴压缩试验，对砂的三轴压缩测试进行了宽范围的限制压力，对0.2MPa至8.0MPa进行了型号的模型性能。

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