Constitutive Model for Clays Under the ISA Framework
Constitutive Model for Clays Under the ISA Framework
复制标题
ISA框架下粘土本构模型
DOI：
10.1007/978-3-319-23159-4_6
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发表时间：
2016
影响因子：
--
通讯作者：
T. Triantafyllidis
中科院分区：
文献类型：
--
作者：
W. Fuentes;M. Hadzibeti;T. Triantafyllidis
晶间应变各向异性伊萨框架是一种新的方法来开发弹塑性模型，其中屈服面定义的应变增量。为此，加载-卸载条件在晶间应变的空间内得到满足，后者是“跟随”应变速率的状态变量。该模型旨在改善循环载荷下的模拟，同时保持其在单调载荷下的良好性能。在这篇文章中，本构模型的粘土伊萨塑性框架下开发。该模型采用了修正的剑桥模型和其他参数来描述晶间应变的演变及其对模型响应的影响。一些说明性的模拟提供了循环荷载下的模型性能进行分析。模拟结果与实验结果一致。可能的改进在文章的最后讨论。
The Intergranular Strain Anisotropy ISA framework is a novel approach to develop elastoplastic models wherein a yield surface is defined in terms of strain increments. For this purpose, the loading-unloading conditions are satisfied within the space of the intergranular strain, this latter being a state variable “following” the strain rate. With this, the model aims to improve the simulations under cyclic loading while keeping their good capabilities at monotonic loading. Within this article, a constitutive model for clays is developed under the ISA plasticity framework. The model adopts some parameters from the modified Cam-Clay model and others to describe the evolution of the integranular strain and its effect on the model response. Some illustrative simulations are provided to analyze the model performance under cyclic loading. The simulations show a qualitative behavior in agreement with some experiments. Possible improvements are discussed at the end of the article.
DOI：
10.1002/nag.2370
发表时间：
2015-08-10
影响因子：
4
作者：
Fuentes, W.;Triantafyllidis, Th.
通讯作者：
Triantafyllidis, Th.