[Oral Presentation]颗粒物质中自驱动入侵物上升的机理研究

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

颗粒物质中自驱动入侵物上升的机理研究

ID：158 Submission ID：138 View Protection：ATTENDEE Updated Time：2024-04-10 17:21:19 Hits：429 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

No files

Abstract

入侵物在颗粒物质中的动力学行为研究在工业和农业中有着广泛的应用，相比于外部边界驱动和局部位移驱动，自激励的力驱动下入侵物的动力学行为有待研究。本文探究了颗粒系统中自激励柱形振子的准二维动力学行为。实验上得到了颗粒物质中柱形振子在不同工况下上升的临界性。通过数值模拟复现了实验现象，利用均方位移，颗粒温度，颗粒速度，非仿射位移、动力学敏感性等参数，描述了颗粒系统的动力学行为，发现了振子的上升过程中颗粒系统伴随着屈服和流变两个阶段，得到了振子上升速度与外部激励与颗粒介质配置之间的函数关系，在介观尺度上揭示了对流和几何空隙填充机制。对颗粒材料尺寸分离机制提供了有效证据，对沙漠生物在沙砾中消失与浮现行为研究有着深远的影响。

Keywords

颗粒物质，入侵物，弛豫，自驱动

Speaker

王士博

东北大学

Submission Author

王士博东北大学

洪广洋东北大学

李健东北大学

余艾冰东南大学

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