[Oral Presentation]基于离散元方法的多晶冰细观结构数值研究

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

基于离散元方法的多晶冰细观结构数值研究

ID：99 Submission ID：17 View Protection：ATTENDEE Updated Time：2024-04-10 17:08:49 Hits：663 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

海冰在宏观上具有各向异性、韧脆转变等复杂力学特性，其与细观尺度上的冰晶结构密切相关。而细观尺度上的冰晶结构对海冰材料宏观力学持性的影响机理尚不明确，目前的工程海冰数值模型中也尚未考虑海冰的宏细观力学持性，不能精确地表征海冰在宏观尺度上的力学行为。本研究采用非规则的海冰离散元方法构建了海冰在细观尺度上的冰晶结构，对海冰试样开展较大加载速率范围的单轴压缩试验，得到海冰在单轴压缩下的韧-脆转化特点，分析不同破坏模式下海冰内部微裂纹的发展过程。此外，研究了海冰破坏过程中加载方向与冰晶C轴相对方向对裂纹生长路径的影响，分析了不同加载方向下海冰的各向异性特征，在细观冰晶尺度上揭示了海冰各向异性强度特征的内在机理。

Keywords

离散元方法；单轴压缩试验；冰晶结构；各向异性；破坏模式

Speaker

李典哲

大连理工大学

Submission Author

李典哲大连理工大学

季顺迎大连理工大学

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