[Oral Presentation]基于离散元法的玉米种子参数标定与验证

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

基于离散元法的玉米种子参数标定与验证

ID：259 Submission ID：265 View Protection：ATTENDEE Updated Time：2024-04-30 10:41:08 Hits：460 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

在离散元仿真中，一组准确的参数是非常重要的。玉米种子作为一种非球形颗粒，颗粒间的滚动摩擦系数以及颗粒与边界间的滚动摩擦系数很难直接测量，需要通过标定获得。本文以三个有代表的玉米品种为研究对象，探究了颗粒间滚动摩擦系数以及颗粒与边界间的滚动摩擦系数需要被准确标定的必要性，并通过研究颗粒间的滚动摩擦系数以及颗粒与边界间的滚动摩擦系数对堆积角的敏感性，确定了利用堆积角的单因素试验标定颗粒间的滚动摩擦系数以及利用与边界材料属性相同的球标定颗粒与边界间的滚动摩擦系数的参数标定方法。结果分析中表明，对于玉米种子颗粒，颗粒间滚动摩擦系数以及颗粒与边界间的滚动摩擦系数对试验结果有显著影响，因此需要被准确标定。颗粒与边界间的滚动摩擦系数对堆积角没有影响，而堆积角对颗粒间的滚动摩擦系数具有较高的敏感性。通过圆筒提起试验和自流筛分试验验证了标定得到的参数的准确性。

Keywords

离散元法,玉米种子,非球形颗粒,参数标定,静摩擦系数,滚动摩擦系数

Speaker

董秋

山东理工大学

Submission Author

董秋山东理工大学

周龙山东理工大学

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