基于ADAMS的半悬挂式农业机组静侧翻稳定性

doi:10.13229/j.cnki.jdxbgxb20170751

吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (4): 1176-1183.doi: 10.13229/j.cnki.jdxbgxb20170751

基于ADAMS的半悬挂式农业机组静侧翻稳定性

陈东辉^1,2, 吕建华^1,2, 龙刚^1,2, 张宇晨^1,2, 常志勇^1,2

1.吉林大学生物与农业工程学院,长春 130022;
2.吉林大学工程仿生教育部重点实验室,长春 130022

收稿日期:2017-07-15 出版日期:2018-07-01 发布日期:2018-07-01
通讯作者: 常志勇(1980-),男,工程师,博士.研究方向:农业机械化工程.E-mail:zychang@jlu.edu.cn
作者简介:陈东辉(1961-),男,教授,博士.研究方向:农业机械化工程与表面摩擦学.E-mail:dhchen@jlu.edu.cn
基金资助:
国家重点研发计划项目(2016YFD0701102); 吉林省教育厅“十三五”产业化培育项目(吉教科合字[2016]442号); 吉林省教育厅“十三五”科学技术项目(吉教科合字[2016]435号、441号); 吉林大学研究生创新基金项目(2017057).

Static rollover stability of semi-mounted agricultural machinery based on ADAMS

CHEN Dong-hui^1,2, LYU Jian-hua^1,2, LONG Gang^1,2, ZHANG Yu-chen^1,2, CHANG Zhi-yong^1,2

1.College of Biological and Agricultural Engineering, Jilin University, Changchun 130022,China;
2.Key Laboratory of Bionic Engineering, Ministry of Education, Changchun 130022,China

Received:2017-07-15 Online:2018-07-01 Published:2018-07-01
Supported by:

摘要/Abstract

摘要： 针对目前半悬挂式农业机组侧翻稳定性研究的不足,提出了一种新的表征机组静侧翻稳定性的有效方法。以横向载荷转移率(LTR)作为机组的侧翻指标,建立了半悬挂式农业机组的侧翻数学模型并进行了准静态侧翻仿真试验。通过ADAMS动力学建模,得到仿真结果与数学模型高度一致,验证了理论模型的正确性。讨论了半悬挂式农业机组各参数对机组静侧翻稳定性的影响并对影响因素进行了敏感度分析。拖拉机和半悬挂式机具的LTR均与其重心高度、轮距、自身质量、轴距、重心到牵引点的距离及牵引点高度等相关。对侧翻指标各影响因素的敏感度分析表明:拖拉机和半悬挂式机具的重心高度和轮距均为影响其侧翻稳定性的重要因素;若要提高半悬挂式机具的侧翻稳定性,除增大轮距和降低重心高度外,还可采用降低牵引点高度及增大重心到牵引点距离的方法。本研究为半悬挂式农业机组的优化设计提供了理论参考。

关键词: 农业工程, 半悬挂式农业机组, 静侧翻稳定性, 横向载荷转移率, 数学模型, 敏感度分析

Abstract: To overcome the current deficiency in studying the Rollover Stability (RS) of Semi-mounted Agricultural Machine Unit (SMAMU, including a tractor and semi-mounted machine), a new method to characterize the RS of SMAMU is proposed. The Lateral Load Transfer Ratio (LLTR) is chosen as the evaluation indicator of RS, the rollover mathematical model is established and quasi static simulation is carried out. Through ADAMS dynamic modeling, the simulation results are in good agreement with the mathematical model, which verifies the correctness of the theoretical model. The effects of the parameters of SMAMU on the RS are discussed and the sensitivity of the influencing factors is analyzed. The LLTR is correlated to the height of center of gravity, the wheel-base of the tractor, the weight of the SMAMU, the wheel-center-distance, the distance from the center of gravity to the tow point and the height of tow point. The results show that the height of the center of gravity and the wheel-base of both the tractor and the semi-mounted machine are the important factors affecting the RS. Besides reducing the height of center of gravity or increasing the wheel-base, reducing the height of the tow point or increasing the distance from the center of gravity to the tow point can also improve RS. This work may provide reference for the optimal design of SMAMU.

Key words: agricultural engineering, agricultural semi-mounted unit, statically lateral roll stability, lateral load transfer ratio (LTR), mathematical model, sensitivity analysis

中图分类号:

S220.1

陈东辉, 吕建华, 龙刚, 张宇晨, 常志勇. 基于ADAMS的半悬挂式农业机组静侧翻稳定性[J]. 吉林大学学报(工学版), 2018, 48(4): 1176-1183.

CHEN Dong-hui, LYU Jian-hua, LONG Gang, ZHANG Yu-chen, CHANG Zhi-yong. Static rollover stability of semi-mounted agricultural machinery based on ADAMS[J]. 吉林大学学报(工学版), 2018, 48(4): 1176-1183.

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基于ADAMS的半悬挂式农业机组静侧翻稳定性

Static rollover stability of semi-mounted agricultural machinery based on ADAMS

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