Evaluating the Performance of an ISA-Hypoplasticity Constitutive Model on Problems with Repetitive Loading
Evaluating the Performance of an ISA-Hypoplasticity Constitutive Model on Problems with Repetitive Loading
复制标题
评估 ISA 亚塑性本构模型在重复加载问题上的性能
DOI：
10.1007/978-3-319-52590-7_16
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发表时间：
2017
影响因子：
5.3
通讯作者：
C. Lascarro
中科院分区：
文献类型：
--
作者：
W. Fuentes;T. Triantafyllidis;C. Lascarro
土体的ISA塑性理论是建立考虑小应变效应的土体本构模型的有用理论。它使用Niemunis和Herle(1997)先前提出的晶间应变概念来增强一些现有的亚塑性模型在循环加载下的能力。与它的前身相比，ISA塑性提出了一个完全不同的公式，包含了依赖于应变幅度的弹性轨迹。然而，它保持了类似的优点，并带来了其他新的优点，如弹性轨迹和改进的多次循环塑性累积模拟。本文对基于ISA塑性模型的反复加载模拟的性能进行了一些数值研究。我们选择将ISA塑性模型与Wolfferdorff的亚塑性模型相耦合来模拟一些实验。文中首先对ISA塑性理论进行了简要的阐述。随后，对其数值实现进行了一步步的详细阐述。提出了一种半显式算法，并给出了允许与其他模型耦合的一些提示。最后，用卡尔斯鲁厄细砂进行了模拟试验，评价了模型在重复荷载作用下的性能。通过多次循环考察了塑性堆积的行为，并对目前的研究提出了一些看法。
The ISA-plasticity is a useful theory to propose constitutive models for soils accounting for small strain effects. It uses the intergranular strain concept, previously proposed by Niemunis and Herle (1997) to enhance the capabilities of some existing hypoplastic models under cyclic loading. In contrast to its predecessor, the ISA-plasticity presents a completely different formulation to incorporate an elastic locus depending on a strain amplitude. However, it keeps similar advantages and brings other new ones such as the elastic locus and improved simulations of the plastic accumulation upon a number of cycles. In the present article, some numerical investigations are made to evaluate the performance of an ISA-plasticity based model on simulations with repetitive loading. We have chosen to couple the ISA-plasticity with the hypoplastic model by Wolfferdorff to simulate some experiments. At the beginning of the article, the theory of the ISA-plasticity is briefly explained. Subsequently, its numerical implementation is step by step detailed. A semi-explicit algorithm is proposed and some hints are given to allow the coupling with other models. At the end, some simulations of experiments with the Karlsruhe fine sand are shown in which the performance of the model under repetitive loading is evaluated. The behavior of the plastic accumulation is examined upon a number of cycles and some remarks are given about the current investigation.
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.