[Oral Presentation]全膜双垄沟垄体成型的离散元法研究

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

全膜双垄沟垄体成型的离散元法研究

ID：97 Submission ID：38 View Protection：ATTENDEE Updated Time：2024-04-09 23:06:01 Hits：417 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

西北地区常采用全膜双垄沟播技术解决地表蓄水难题，然而垄体成型质量将直接影响垄沟两侧蓄水量、地膜覆盖可靠性及作物长势。本研究以起土铲不同倾角及入土深度为变量因素，探究不同作业参数对垄体成型质量的影响规律。研究中采用离散元法建立土壤黏弹性模型，分析了起垄过程中起土铲阻力、垄体结构、土壤颗粒扰动变化。结果表明，随着入土深度及倾角的增加，铲体受到阻力也随之增加；垄体高度受起土铲入土深度及角度影响显著，相同入土角下大小垄高度与起土铲入土深度成正比。不同作业参数组合下，小垄高度均符合起垄要求。而大垄符合农艺要求的作业参数为入土深度100mm时起土铲倾角15°、30°、45°的情况；位于距地表30～90mm范围的土壤最易受到旋耕刀及起土铲扰动，并且小垄土壤扰动强于大垄。研究结果有助于深入理解旋耕起垄过程，探明影响垄体质量成型的影响因素。

Keywords

全膜双垄沟,离散元法,起土铲,大垄,小垄

Speaker

宋学锋

副教授 甘肃农业大学机电工程学院

Submission Author

宋学锋甘肃农业大学机电工程学院

戴飞甘肃农业大学机电工程学院

史瑞杰甘肃农业大学机电工程学院

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