[Oral Presentation]基于AgriDEM软件的小麦植株切割过程仿真分析及试验研究

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AgriDEM软件的小麦植株切割过程仿真分析及试验研究

ID：47 Submission ID：141 View Protection：ATTENDEE Updated Time：2024-04-09 22:09:06 Hits：524 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

基于离散元法的小麦植株切割过程仿真分析，对小麦收获机械切割部件的优化具有重要的意义，而准确地测量及标定小麦植株模型的力学参数是仿真重要前提。首先，本文基于Hertz-Mindlin接触模型和平行粘接模型在AgriDEM软件中建立了小麦茎秆模型。通过搭建单茎秆摆锤式切割装置进行茎秆动态切割试验，探究了茎秆相关物理特性及切割参数对切割力峰值的影响，同时，基于AgriDEM软件进行了单茎秆动态切割仿真并与实际试验结果对比，结果表明利用准静态粘接力学参数进行动态切割仿真时，茎秆模型的切割力峰值仿真误差随着切割速度的增大而增大，为进一步降低不同切割速度下的仿真误差，本文提出了茎秆粘接力学参数的标定方法。之后，通过自制的往复式切割台架试验探究了前进速度、切割速度及切割高度等相关参数对切割力峰值的影响，同时，通过基于AgriDEM软件的往复式切割过程仿真分析，进一步验证了参数标定方法的可行性。最后，利用往复式切割过程仿真对切割参数进行了优化，得到最大切割速度、切割速比和滑切角等切割参数的最佳参数组合。

Keywords

离散元法，AgriDEM软件，小麦茎秆，动态切割，参数标定，仿真优化

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