[Oral Presentation]冲击载荷作用下含预制裂纹混凝土动态破坏的离散元模拟

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

冲击载荷作用下含预制裂纹混凝土动态破坏的离散元模拟

ID：27 Submission ID：57 View Protection：ATTENDEE Updated Time：2024-04-09 22:01:14 Hits：378 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

混凝土在防护工程领域有着广泛的应用，其强动载荷下的毁伤效应在国防科技发展中具有重要的战略地位。本文通过建立混凝土三维离散元细观模型，分析了动态压缩载荷作用下混凝土的动态强度以及损伤发展和裂纹演化过程。基于有限差分(FDM)-离散元(DEM)耦合方法构建了分离式霍普金森压杆冲击数值模型，针对C60及C80两种高强度等级混凝土试件开展不同应变率下的动态冲击模拟，分析混凝土在不同应变率加载下破坏过程中的裂纹扩展过程和应力场分布，并在混凝土试样中预制了不同倾角的裂纹，分析含预制裂纹的混凝土试件在不同应变率下的应力场分布以及破坏过程中的裂纹扩展过程。

Keywords

高强混凝土,霍普金森杆（SHPB）,预制裂纹,有限差分-离散元耦合,裂纹扩展

Speaker

黄锦元

太原理工大学

Submission Author

赵婷婷太原理工大学

黄锦元太原理工大学

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