Mainly, two divisions are encountered in the literature regarding constitutive models: elasto-plasticity and hypoplasticity. In addition, barodesy and the framework of generalized plasticity are used. The main disadvantage of nearly all models is the failure to reproduce the mechanical behaviour under cyclic loading without restrictions. A model which deals neither with the true hypoplastic nor the true elasto-plastic approach will be proposed herein. Moreover, it combines and establishes the unification of both frameworks and it can be assigned to both of them. It introduces a so called historiotropic surface, responsible for the memory of the soil, but no consistency condition. It also introduces a hypoplastic strain rate, but incorporating the distance to the new surface for its intensity and the back stress tensor. Hence, both the intergranular strain as well as the fabric-dilatancy tensor are omitted, even though the eight-shaped stress hysteresis at cyclic mobility is well reproduced.

中文翻译：

---

细粒土的本构记忆模型 (CAM)

在有关本构模型的文献中主要遇到两个部分：弹塑性和低塑性。此外，使用了barodesy和广义可塑性的框架。几乎所有模型的主要缺点是无法在没有限制的情况下再现循环载荷下的机械行为。本文将提出一个既不处理真发育不全也不处理真弹塑性方法的模型。此外，它结合并建立了两个框架的统一性，并且可以分配给它们。它引入了一个所谓的历史性表面，负责土壤的记忆，但没有一致性条件。它还引入了塑性应变率，但结合了到新表面的距离来确定其强度和背应力张量。因此，