Simhypo-sand: a simple hypoplastic model for granular materials and SPH implementation

IF 5.6 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Acta Geotechnica Pub Date : 2024-05-31 DOI:10.1007/s11440-024-02350-8

Shun Wang, Hong-jie Fang, Xuan Kang, Dian-qing Li, Wei Wu

引用次数: 0

Abstract

This paper introduces a new hypoplastic model characterized by a simple and elegant formulation. It requires only 7 material parameters to depict salient mechanical behaviors of granular materials. The numerical implementation employs an explicit integration method, enhanced by a best-fit stress correction algorithm in a smoothed particle hydrodynamics code. The performance of this model in capturing soil behavior across a range of scenarios is demonstrated by conducting various numerical tests, including triaxial and simple shear at low strain rates, as well as granular collapse, rigid penetration and landslide process at high strain rates.

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模拟砂：粒状材料的简单次塑性模型和 SPH 实现

本文介绍了一种新的次塑性模型，其特点是表述简单而优雅。它只需要 7 个材料参数就能描述颗粒材料的显著力学行为。数值实现采用了显式积分法，并通过平滑粒子流体力学代码中的最佳拟合应力校正算法进行了增强。通过进行各种数值测试，包括低应变率下的三轴剪切和简单剪切，以及高应变率下的颗粒塌陷、刚性渗透和滑坡过程，证明了该模型在各种情况下捕捉土壤行为的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Geotechnica ENGINEERING, GEOLOGICAL-

CiteScore

9.90

自引率

17.50%

发文量

297

审稿时长

4 months

期刊介绍： Acta Geotechnica is an international journal devoted to the publication and dissemination of basic and applied research in geoengineering – an interdisciplinary field dealing with geomaterials such as soils and rocks. Coverage emphasizes the interplay between geomechanical models and their engineering applications. The journal presents original research papers on fundamental concepts in geomechanics and their novel applications in geoengineering based on experimental, analytical and/or numerical approaches. The main purpose of the journal is to foster understanding of the fundamental mechanisms behind the phenomena and processes in geomaterials, from kilometer-scale problems as they occur in geoscience, and down to the nano-scale, with their potential impact on geoengineering. The journal strives to report and archive progress in the field in a timely manner, presenting research papers, review articles, short notes and letters to the editors.