کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1711076 | 1519532 | 2015 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Torque and energy characteristics for strip-tillage cultivation when cutting furrows using three designs of rotary blade
ترجمه فارسی عنوان
ویژگی های گشتاور و انرژی برای کشت خشخاش در هنگام بریدن حفره ها با استفاده از سه طرح تیغه دوار
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
کنترل و سیستم های مهندسی
چکیده انگلیسی
Strip-tillage research in developing countries usually relies on commonly used rotary blades designed for conventional full disturbance soil tillage. With the aim of optimising the blade geometry and operational settings, this study investigated the effect of three blade geometries (conventional, half-width and straight) at four rotary speeds (125, 250, 375, and 500Â rpm) on torque, power and energy characteristics. A single row rotary tiller was fitted with the blades set at a cutting width of 50Â mm and depth of 50Â mm and tested in a soil bin (sandy loam soil). Analyses of high speed video images and corresponding blade motion revealed that the peak torque occurred at a higher blade penetration depth as the speed increased indicating transformation of the peak torque requirement from due to initial soil failure at a low speed to final soil cutting and throwing at a high speed. The straight blade design required the least torque, average power, peak power, specific energy and effective specific energy at 375-500Â rpm which targeted for a small bite length for a fine soil tilth. The straight blade saved 20-25% power when compared with the conventional and half-width blades at 500Â rpm. Although, the average power, peak powerand specific energy requirements increased with the rotary speed for all the blades with a steep rise over 375Â rpm, the effective specific energy requirement remained almost unchanged for the straight blade indicating its high effectiveness for strip-tillage operations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosystems Engineering - Volume 129, January 2015, Pages 329-340
Journal: Biosystems Engineering - Volume 129, January 2015, Pages 329-340
نویسندگان
M.A. Matin, J.M. Fielke, J.M.A. Desbiolles,