[Oral Presentation]基于离散元法的冲击载荷作用下岩石颗粒碎片的统计分析

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

基于离散元法的冲击载荷作用下岩石颗粒碎片的统计分析

ID：119 Submission ID：68 View Protection：ATTENDEE Updated Time：2024-04-10 17:13:57 Hits：656 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

冲击载荷作用下岩石的破碎规律研究对解决防护工程、采矿工程和岩土工程等领域中安全防御、爆破开采、级配设计等核心问题具有重要意义。为从细观尺度对岩石的破碎特性展开深入研究，本文采用Rocky DEM软件建立落锤冲击试验仿真模型，选用Tavares模型描述颗粒破碎行为，根据实验获得的岩石参数确定破碎模型参数取值，针对赣南矿石开展了不同加载重量和冲击速度的落锤试验仿真模拟。对岩石破碎过程中产生颗粒碎片的粒度分布、位置信息、移动速度以及形状参数等指标展开统计分析。研究结果表明当锤头质量较小时，随着加载速度增加，碎片的扩散范围均匀增大，粒度分布和移动速度会出现突变情况；当锤头质量较大时，随着加载速度增加，颗粒碎片的移动速度均匀增加。

Keywords

颗粒破碎,Tavares模型,冲击载荷,离散元

Speaker

李中源

太原理工大学

Submission Author

李中源太原理工大学

赵婷婷太原理工大学

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