塑性势(plastie power)表征塑性应变增量同加载曲面关系的“势函数”，也是对应力分量内的偏导数求出，即式中d又是一非负的瞬时比例系数。是1938年梅兰(E.Melan)参照弹性应变增量用弹性势函数对应力的偏导数表达式。
本文探讨了利用塑性势概念研究正常压密粘土的应力应变关系的可能性。
This paper discusses the possibility of using the concept of plastic potential to study the stress-strain relationship of normally consolidated clays.
基于多重势面弹塑性理论分析局部化问题，构造了适用于裂隙岩体破坏的多重势面不连续分叉模型，建立了求解局部化方向的数值方法。
In the framework of the multiple potential surface elastoplastic theory, the discontinuous bifurcation model used to simulate the failure of the jointed rocks is presented in this paper.
多重势面模型直接从数学原理出发建立本构关系，避开了传统塑性理论中屈服面的概念，为研究岩土工程材料本构模型提供了新的思路。
The multi-potential surface model in strain space is more practical, since its parameters are easy to be determined, and the program based on the model is easy to be developed.
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