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极大变形和相关破坏，本研究提出了一种新的数值方法，在该方法中，采用两个简单材料参数的宾汉流体模拟变形岩土材料的行为。 c和内摩擦角φ是确定岩土材料抗剪强度的基本建模参数。为了研究该方法的有效性和适用性，我们使用了基本但复杂的例子，例如粘性土的常规承载力、土体的渗透力等。对刚体进入地面和液化土的横向扩散进行了模拟，发现所提出的数值方法可以高精度地重现所有示例。本研究最重要的成果是所提出的数值方法具有预定义。和后处理器已上传到网站上。用户可以毫无困难地描述初始条件和边界条件以及网格系统。可以从网站免费下载易于使用的软件。记录下载次数目前超过200个。

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

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

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

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

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