Kinematic Hardening Model for Sand and Clay

这项研究的目的是建立一个土体的运动硬化模型，该模型可用于预测大应力反转和地震时的土体行为。该模型将建立在砂土和粘土在大的三维应力变化过程中的行为的实验证据的基础上，包括在主应力轴旋转和不旋转的情况下的卸载和重新加载。部分实验结果是可用的，部分将在本研究下产生。砂土和粘土的三轴试验、立方三轴试验和扭转试验结果表明，建立动态硬化模型是可行的。

The objective of this study is to develop a kinematic hardening model for soils that may be used in prediction of soil behavior during large stress reversals and earthquakes. This model will be developed on the basis of experimental evidence of the behavior sand and clay during large three-dimensional stress changes involving unloading and reloading with and without rotation of principal stress axes. Part of the experimental results are available and part will be generated under this study. The results available from triaxial, cubical triaxial, and torsion tests on sand and clay indicate that development of a kinematic hardening model is feasible.