کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8054655 | 1519490 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A draught force estimator for disc harrow using the laws of classical soil mechanics
ترجمه فارسی عنوان
برآورد نیروی پیشنهادی برای دیسک حروس با استفاده از قوانین مکانیک خاک کلاسیک
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کلمات کلیدی
دیسک هارو، نیروی پیشنهادی، مقاومت نورد، کلواد شکستن، مدل های تحلیلی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
کنترل و سیستم های مهندسی
چکیده انگلیسی
The disc harrow is a tillage implement that can be used to perform both the conventional and conservation tillage practices; therefore, it is important to have an accurate understanding of draught force and power requirements of it. The main objective of this study was to develop and validate a theoretical equation for the estimation of draught force of a disc harrow in a range of tillage practices and configurations. The model considers soil cutting, clod break up, soil displacement, and disc blade rolling resistance processes. According to the results of this study, in all cases of operation of a tandem and an offset disc harrow, the output values of the estimator were within the acceptable range obtained from the ASAE standard. In addition, the error of the estimator in predicting experimental data obtained from various published sources was lower than 20%. Finally, measured draught forces of a 28-blade tandem disc harrow on a silty clay loam soil varied in the range of 14Â kN to 42Â kN for primary, and 15Â kN to 20Â kN for secondary disc harrowing. In addition, errors of the estimator to predict the experimental data obtained in this study for primary and secondary disc harrowing were lower than 8%, and 6%, respectively. Therefore, the overall conclusion of the present study is that the developed estimator will be able to predict the draught force requirements of a disc harrow.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosystems Engineering - Volume 171, July 2018, Pages 52-62
Journal: Biosystems Engineering - Volume 171, July 2018, Pages 52-62
نویسندگان
Iman Ahmadi,