Kinematic Hardening Model for Sand and Clay

本研究的目的是开发一种土壤的运动学硬化模型，该模型可用于预测大应力逆转和地震期间的土壤行为。该模型将基于砂和粘土在大的三维应力变化过程中的行为的实验证据，包括卸载和再加载，有和没有主应力轴的旋转。部分实验结果已经得到，部分将在本次研究中生成。砂和粘土的三轴、立方三轴和扭转试验结果表明，建立运动硬化模型是可行的。

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.