[Oral Presentation]符号距离场增强的虚单元方法及其在可变形多体大变形摩擦接触中的应用

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

符号距离场增强的虚单元方法及其在可变形多体大变形摩擦接触中的应用

ID：102 Submission ID：28 View Protection：ATTENDEE Updated Time：2024-04-10 17:09:25 Hits：537 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

本文提出了一种符号距离场虚单元方法（SDF-VEM），作为一种虚单元方法的变体，能够利用符号距离场作为几何工具，模拟可变形多体系统中的大变形摩擦接触问题。利用虚单元方法内在的单元几何形状适应性，我们可以用单个或多个任意形状的多边形网格来表示每个可变形体，从而可以通过自适应的节点插入和调整，来实现基于点点格式的接触离散与约束施加。多体系统中广泛存在的可变形体形状的不规则性和庞大的接触体数量，给接触检测带来巨大挑战，为此我们引入了基于符号距离场的统一接触检测框架。包括赫兹接触和多颗粒接触等问题在内的二维数值算例，证明了该方法的准确性和有效性。

Keywords

虚单元方法,符号距离场,点点接触,自适应网格,大变形,可变形多体

Speaker

许广涛

中国科学院力学研究所

Submission Author

许广涛中国科学院力学研究所

刘传奇中科院力学所

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