[Oral Presentation]基于持续同调方法的颗粒材料静态液化研究

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

基于持续同调方法的颗粒材料静态液化研究

ID：28 Submission ID：199 View Protection：ATTENDEE Updated Time：2024-04-09 22:01:25 Hits：483 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

本文从接触网络角度研究了剪切颗粒材料的固-液相转变。利用持续同调理论从整体角度量化了固液转变过程中接触网络的动力学行为，重点研究了两个重要的拓扑不变量，即组件和环。揭示了接触网络的高度异质组成，并通过拓扑不变量的产生与消亡，确定了区分强弱接触体系的最优划分阈值。同时，识别了剪切过程中的失稳前兆，在体系仍然稳定承载时预测了固-液转变的发生。此外，本文从接触网络及其同调群演化的角度提供了颗粒材料固液转变的全景图。最后，本研究表明，持续同调方法能够通过量化接触网络演化定量地连接微观动力学和宏观响应，这为进一步将接触网络动力学行为纳入颗粒材料的本构建模提供了有效的途径。

Keywords

颗粒材料，接触网络，失稳前兆

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