Application of numerical method based on fluid dynamics to solve extremely large deformation and associated failure of geomaterials.

应用基于流体动力学的数值方法解决岩土材料的极大变形及相关破坏。

• 批准号: 17360223
• 负责人: YASHIMA Atsushi
• 金额: $ 10.05万
• 依托单位: Gifu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360223/
• 关键词: geotechnical engineering; numerical analysis; model test; fluid dynamics; large deformation; 地震工学; 大変形解析; ソフトウェア

In order to solve extremely large deformation and associated failure of geomaterials, a new numerical method has been proposed in this study. In the proposed method, the behavior of deformed geomaterial modeled by the Bingham fluid in which two simple materials parameters are employed. The cohesion c and the internal friction angleφ are fundamental modeling parameters to determine the shear strength of a geomaterial.In order to investigate the validity and applicability of the proposed method, basic but complicated examples such as conventional bearing capacity of cohesive soil, penetration of the rigid body into a ground and lateral spreading of liquefied soil are simulated. It is found that the proposed numerical method can reproduce all of examples with a high degree of accuracy.The most important achievement in this study is that the proposed numerical method with pre-and post-processor has been uploaded on a web site. Users can carry out numerical analyses without any difficulties in orescribing the initial and boundary conditions as well as mesh system. The easy-to-use software can be downloaded freely from the web site. The number of downloaded is recorded over 200 at the present moment.

为了解决岩土材料的大变形及其破坏问题，本文提出了一种新的数值方法。在该方法中，变形岩土材料的行为由宾汉流体模型，其中两个简单的材料参数。为了验证该方法的有效性和适用性，对粘性土的常规承载力、刚体贯入和液化土的侧向扩展等基本而复杂的算例进行了数值模拟。结果表明，本文所提出的数值方法能够以较高的精度再现所有的算例，本文最重要的成果是本文所提出的数值方法及其前后处理器已被上传到一个网站上。用户可以进行数值分析，没有任何困难，在描述初始和边界条件以及网格系统。该软件易于使用，可从网站免费下载。目前，下载量已超过200。

项目成果

CIP-based numerical simulation for large deformation problems considering the interaction between geomaterial and rigid body

基于CIP的考虑岩土材料与刚体相互作用的大变形问题数值模拟

• 发表时间: 2006
• 期刊: Proc. 6th European conference on numerical methods in geotechnical engineering
• 作者: K.Sawada;S.Moriguchi;A.Yashima;M.Goshima;S.Inoue;Y.Nishida
• 通讯作者: Y.Nishida

Large deformation analysis of geomaterials using CIP-method (in Japanese)

使用 CIP 方法进行岩土材料大变形分析（日语）

• 发表时间: 2006
• 期刊: Proc. 11st the Japan Society for Computational Engineering and Science
• 作者: S.Moriguchi;K.Sawada;A.Yashima
• 通讯作者: A.Yashima

CIP-based numerical simulation for large deformation problems considering the interaction between geomaterial and rigidy body

基于CIP的考虑岩土材料与刚体相互作用的大变形问题数值模拟

• 发表时间: 2006
• 期刊: Proc. 6th European conference on numerical methods in geotechnical engineering
• 作者: K.Sawada;S.Moriguchi;A.ashima;M.Goshima;S.lnoue;Y.Nishida
• 通讯作者: Y.Nishida

CIP法を用いた地盤材料の大変形解析

利用CIP法进行地基材料大变形分析

• 发表时间: 2006
• 期刊: 第11回日本計算工学講演会論文集
• 作者: 森口周二;八嶋 厚;沢田和秀
• 通讯作者: 沢田和秀

Tests of geomaterial flow using model slope and its numerical simulation (in Japanese)

使用模型坡度进行岩土材料流动试验及其数值模拟（日语）

• 发表时间: 2006
• 期刊: Proc. the 41st Japan National Conference on Geotechnical Engineering No. 1116 (CD-ROM)
• 作者: M.Ito;S.Moriguchi;M.Goshima;A.Yashima;K.Sawada;S.Inoue;Y.Nishida
• 通讯作者: Y.Nishida