[Oral Presentation]颗粒材料FEM-DEM-CFD多尺度数值方法及应用

Organized By

Hohai University

Monash University

Co-organized by

Southeast University

Jiangxi University of Science and Technology

Northeast University

DUT-BSU Scientific Research and Innovation Center

Suzhou University of Science and Technology

State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment

Sponsoring agency

KELI SDEM Software (Dalian) Co., Ltd.

Sugon Smart Computing Information Technology Co., Ltd.

Beijing Paratera Technology Co., Ltd.

Simpop Information Technology Co., Ltd.

Important Dates

Conference Announcement

December 2023, release First Round Announcement
Abstract Submission Deadline
March 31^th, 2024
Paper Submission Deadline
April 30^th, 2024
Registration
From January 1^st, 2024
Conference Schedule
May 31^st (Friday), 2024 On-Site Registration
June 1^st to 3^rd, 2024 Conference

颗粒材料FEM-DEM-CFD多尺度数值方法及应用

ID：267 Submission ID：194 View Protection：ATTENDEE Updated Time：2024-04-30 10:44:42 Hits：654 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

Session：[No Session] » [No Session Block]

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Abstract

针对饱和颗粒材料中结构与颗粒相互作用问题，基于拖曳力局部平均化方案考虑了颗粒与流体之间的相互作用，在离散元（DEM）分析层面引入计算流体动力学（CFD）以在颗粒层次反映颗粒-流体相互作用。结合有限元-离散元（FEM-DEM）连接尺度方法，利用有限元为流体计算区域提供压力边界条件，进一步考虑外部流场对离散元区域产生的影响，发展了Cosserat FEM-DEM-CFD多尺度方法。基于所发展的多尺度方法对饱和地基的破坏模式进行了分析，并与Biot-Cosserat FEM-DEM连接尺度方法进行了对比，结果表明考虑流体效应的连接尺度方法能够合理的模拟地基承载力问题，再现位移加载条件下地基内剪切带的形成、孔隙水的排出过程等现象。进一步的，模拟分析了海洋土-桩基相互作用问题。

Keywords

饱和颗粒材料,有限元,离散元,计算流体动力学,多尺度

Sponsored By

Hohai University

Panel of Computational Mechanics on Granular Materials, Working Party of Computational Mechanics, Chinese Society of Theoretical and Applied Mechanics

Jiangsu Society of Theoretical and Applied Mechanics