[Oral Presentation]物质点法结合非局部本构模型的土体挖掘模拟

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

物质点法结合非局部本构模型的土体挖掘模拟

ID：221 Submission ID：318 View Protection：ATTENDEE Updated Time：2024-04-30 10:31:24 Hits：598 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

本研究提出了一种考虑颗粒材料粘聚力的非局部本构模型，并基于物质点法在连续介质力学大变形理论框架下进行了三维数值实现。为了理解和分析颗粒材料和机械之间的相互作用，本研究对具有不同摩擦系数，粘聚力等物理参数的颗粒材料进行了切削挖掘的数值模拟，比较分析了不同物理参数的颗粒材料在被切削时的破环形态和整个切削过程的挖掘阻力数据，并进行的相应的实验验证。结果表明，在切削挖掘时粘聚力对颗粒材料破坏形态具有较大影响。无粘聚力的干燥颗粒材料在被切削挖掘时，随着推土板的前进，颗粒材料在推土板前堆积并形成一个近似于静摩擦角的角度；有粘聚力的湿颗粒材料在被切削挖掘时，可以形成很大的堆积角度并且挖掘阻力较大，同时力的震荡幅度也较大。此外，不同物理参数的数值模拟的结果和对应的实验结果吻合良好，表明了该本构模型的有效性和准确性。

Keywords

非局部本构模型,物质点法,大变形,切削挖掘,相互作用

Speaker

刘晓东

博士后 清华大学

Submission Author

刘晓东清华大学

景路清华大学

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