[Oral Presentation]基于Minkowski Sum理论的任意形态刚体—可变形颗粒的离散元方法

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Minkowski Sum理论的任意形态刚体—可变形颗粒的离散元方法

ID：17 Submission ID：20 View Protection：ATTENDEE Updated Time：2024-04-09 21:57:38 Hits：571 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

颗粒形态对颗粒物质在自然界和工业生产过程中的复杂行为具有重要影响。对具有光滑表面的任意形态颗粒系统进行模拟仍然存在挑战。目前离散元方法主要关注于刚体颗粒力学行为的模拟，而对于可变形颗粒缺乏有效的模拟手段。因此，提出了一种基于Minkowski Sum接触算法的离散元方法，用于模拟任意形态的刚体和可变形颗粒。该方法通过组合多个基本扩展单元，实现了具有光滑表面的任意形态颗粒的构造。基于Minkowski Sum理论，该方法实现了对任意形态颗粒之间多接触点的接触计算和接触力的有效叠加。在此基础上，建立了颗粒骨架—表面单元模型，通过颗粒骨架计算颗粒内部力和颗粒节点的位移，并更新颗粒表面单元以表征颗粒的形态变化。验证了所提出的模型具有较高的各向同性水平，并通过多组算例验证了所提出方法的准确性和健壮性。

Keywords

颗粒材料，Minkowski sum，任意形态颗粒，可变形颗粒，离散元方法

Speaker

徐庆巍

大连理工大学

Submission Author

徐庆巍大连理工大学

季顺迎大连理工大学

王嗣强大连理工大学

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