| 朱惠斌,秦晋,白丽珍,钱诚,王明鹏,李镕东.基于EDEM仿真的不同驱动式圆盘刀作业性能对比与分析[J].干旱地区农业研究,2025,(3):299~314 |
| 基于EDEM仿真的不同驱动式圆盘刀作业性能对比与分析 |
| Comparison and analysis of the operating performance of different drive\|type disc cutters based on EDEM simulation |
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| DOI：10.7606/j.issn.1000-7601.2025.03.30 |
| 中文关键词: 圆盘刀 驱动式 EDEM仿真 防堵装置 秸秆切断率 |
| 英文关键词:disc knife driven EDEM simulation anti\|blocking device straw cutting rate |
| 基金项目:国家自然科学基金（52265033，51865022）；云南省重点基金（202401AS070115） |
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| 中文摘要: |
| 为研究不同驱动式圆盘刀在我国西南地区秸秆覆盖量大以及秸秆整杆覆盖条件下免耕作业时作业性能的差异，以仿生圆盘刀、缺口圆盘刀、波纹圆盘刀为研究对象，确定圆盘刀切割秸秆时的受力状态；以正转圆盘刀类型、正反转圆盘刀类型、机具前进速度、圆盘刀转速为试验因素，（粘结键断裂数量）秸秆切断率、土壤扰动量、机具通过性为评价指标，在自行研制的防堵装置上进行了单因素EDEM离散元仿真和三因素三水平田间正交对比试验。仿真试验结果表明：在相同条件下，圆盘刀作用下的粘结键断裂数量、机具通过性的效果均表现为正转仿生圆盘刀>正转缺口圆盘刀>正转波纹圆盘刀，正反转仿生圆盘刀>正反转缺口圆盘刀>正反转波纹圆盘刀，土壤扰动量与之相反。田间试验结果表明：当秸秆覆盖量为1.432 kg·m-2时，圆盘刀类型对秸秆切断率的影响最显著，在不同转速和机具前进速度下，作业效果与仿真试验相吻合。综上，在大量秸秆覆盖和整杆覆盖条件下，除土壤扰动量外，仿生圆盘刀的作业性能优于传统圆盘刀，仅有正反转仿生圆盘刀满足作业要求且作业效果较优。本研究可为秸秆覆盖量大和整杆覆盖条件下免耕播种机破茬开沟部件的合理设计及适用性分析提供理论依据。 |
| 英文摘要: |
| To investigate the differences in the operational performance of various driven disc knives during no\|tillage operations under conditions of heavy straw mulching and full straw coverage in Southwest China, this study focused on bionic disc knives, notched disc knives, and corrugated disc knives, analyzing their force states during straw cutting. Single\|factor EDEM discrete element simulations and three\|factor, three\|level orthogonal field comparison tests were conducted on a self\|developed anti\|clogging device, with the following experimental factors: types of forward\|rotating disc knives, types of forward\|and\|reverse\|rotating disc knives, forward speed of the machine, and rotational speed of the disc knives. Evaluation indicators included the number of broken bonding keys (indicating straw cutting rate), soil disturbance, and machine passage ability. Simulation test results indicated that, under identical conditions, the number of broken bonding keys and machine passage ability were superior in the order of forward\|rotating bionic disc knives > forward\|rotating notched disc knives > forward\|rotating corrugated disc knives, and similarly for forward\|and\|reverse\|rotating disc knives. Soil disturbance showed an opposite trend. Field test results showed that when the straw coverage was 1.432 kg·m-2, the type of disc knife had the most significant impact on the straw cutting rate. Operational effectiveness aligned with simulation test results across various rotational and forward speeds of the machine. Under conditions of heavy straw mulching and full straw coverage, bionic disc knives outperformed traditional disc knives in all aspects except soil disturbance. Only the forward\|and\|reverse\|rotating bionic disc knife met operational requirements and demonstrated superior performance. This study provides a theoretical foundation for the rational design and applicability analysis of stubble\|cutting and trenching components in no\|tillage seeders under heavy straw mulching and full straw coverage conditions. |
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