[Oral Presentation]环形岩石渐进破坏三维近场动力学模拟

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

环形岩石渐进破坏三维近场动力学模拟

ID：42 Submission ID：123 View Protection：ATTENDEE Updated Time：2024-04-09 22:07:25 Hits：387 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

岩石被广泛应用于工程建设领域，其内部的孔隙与微裂纹不规则分布导致岩石的裂纹萌生、拓展及破裂过程高度复杂，因而，岩石材料渐进破坏过程的试验研究及数值模拟一直是岩石力学的重要研究方向，岩石圆环劈裂试验被广泛用于确定脆性岩石材料的间接抗拉强度。本文建立了三维键基近场动力学模型并对岩石圆环劈裂试验进行了数值模拟，首先对模型的精度及网格收敛性进行了验证，随后讨论了不同材料损伤本构模型对试件的裂纹拓展和极限荷载的影响，结果表明：三维键基近场动力学模型模拟岩石材料渐进破坏过程是可行的，对于不同孔径比的岩石圆环，数值模拟结果与试验结果基本一致，使用三线性与非线性本构模型进行数值模拟的计算结果与试验结果比较吻合。本文研究成果可为岩石类准脆性材料渐进破坏过程的三维数值模拟提供参考。

Keywords

圆环劈裂试验；准脆性材料；渐进破坏；数值模拟

Speaker

刘昊宇

中国农业大学

Submission Author

邱流潮中国农业大学

刘昊宇中国农业大学

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