[Oral Presentation]不同形态纤维对颗粒料床的强度增强机理

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

不同形态纤维对颗粒料床的强度增强机理

ID：122 Submission ID：73 View Protection：ATTENDEE Updated Time：2024-04-10 17:14:28 Hits：400 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

No files

Abstract

本研究构建了由球柱单元连接的不同形态的纤维网和纤维笼，通过三轴压缩数值仿真，研究了纤维网、纤维笼以及水平正交排布的纤维对球形颗粒料床强度大小的影响及其微观机理。水平多层纤维网相比于纤维笼和水平正交排布的纤维，对颗粒料床的应力增强效果更好。在一定纤维网层间距、弹性模量范围内，球颗粒料床的强度随水平纤维网的层间距和纤维网弹性模量的增大而增大。增大颗粒间的摩擦系数以及纤维网含量也能够有效地增大颗粒料床的强度。此外，通过在球颗粒间增加JKR粘性力模型，研究了表面能系数对纤维增强球颗粒料床的增强规律与机理。研究发现增大球颗粒之间的表面能系数，会提高纤维球颗粒混合料床的峰值强度，而对于料床的残余强度影响不大。

Keywords

离散元，纤维网增强，球颗粒料床，三轴压缩，JKR模型

Speaker

何灵空

学生 北京林业大学

Submission Author

何灵空北京林业大学

李艳洁北京林业大学

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