Soil Dynamics in Tillage and Traction PDF Download
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Author: William R. Gill
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 524
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Author: William R. Gill
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 524
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Book Description
Author: William R. Gill
Publisher:
ISBN:
Category : Soil dynamics
Languages : en
Pages : 511
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: E. McKyes
Publisher: Elsevier
ISBN: 044460104X
Category : Technology & Engineering
Languages : en
Pages : 226
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Book Description
After giving a brief history of tillage practices and implements used throughout the world dating back to ancient times, this book goes on to describe the basic soil mechanics techniques needed to calculate the forces developed in soil by simple-shaped cutting tools. The methods of measuring soil mechanical properties, water pressure in soil and shear rate effects are touched upon. A review is given of two and three dimensional soil cutting mathematical mechanics models to predict soil cutting forces and soil volumes disturbed by cutting and tillage tools, as well as the state-of-the-art of soil loosening, structural rearrangement and plant growth as affected by tillage tools. The author also includes an introduction to the analysis of traction machines. There are many numerical examples of mechanical analyses and predictions worked out in the various sections of the book as well as numerous unsolved problems at the end of a number of the chapters. Written in a textbook style, this monograph is ideal for anyone wanting to learn modern techniques for the mechanical description of soil cutting and tillage forces and soil volumes disturbed. It also provides a reference for analytical formulae and calculated force forces. It will be of interest to universities and colleges worldwide which have Agricultural Engineering Programs, Civil and Mechanical Engineering schools which specialize in soil mechanics and construction machinery as well as to research stations worldwide with interests in soil tillage, soil physics etc.
Author: W.E. Larson
Publisher: Springer Science & Business Media
ISBN: 9400924216
Category : Nature
Languages : en
Pages : 272
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Book Description
Agricultural soils are subjected to many applied mechanical stresses that influence their behavior. Stresses arise from tillage machines, seeders and chemicals applicators, tractors, and equipment for harvest and transport. Applied stresses may compact or loosen the bulk soil. Micro sections of soil (aggregates or clods) may be compacted during tillage while the bulk soil is loosened. Because most granular soils are combined into structural units of varying sizes with different strengths and properties, prediction of the effect of stresses on the behavior of bulk soils is difficult. The basic strength properties of soil are determined by many fac tors: the size distribution of particles, chemical and mineralogical properties of inorganic clay fraction, the organic matter content and composition, the water content and the stress history. These factors combine and interact to produce many possible behavior patterns. Changes in structure of the soil from applied stresses and biologi cal reactions may profoundly influence storage and transmission of water, heat, and air, and the mechanical resistance to penetration by plant roots. They may also affect the traction of vehicles. Manipulation of structural properties of soils by tillage implements is a major cost under most crop production systems. Reduced energy use is also a significant conservation objective. Improved management systems are very dependent upon a better understanding of soils' response to applied stresses. The content of this book resulted from a NATO Advanced Research Workshop held in St. Paul, Minnesota, U.S.A. September 13-16, 1988.
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 524
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Set includes revised editions of some issues.
Author: Frank Freese
Publisher:
ISBN:
Category : Aerial photography
Languages : en
Pages : 1326
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Author: Dennis R. Heldman
Publisher: CRC Press
ISBN: 1498711073
Category : Science
Languages : en
Pages : 2120
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The Definitive Reference for Food Scientists & EngineersThe Second Edition of the Encyclopedia of Agricultural, Food, and Biological Engineering focuses on the processes used to produce raw agricultural materials and convert the raw materials into consumer products for distribution. It provides an improved understanding of the processes used in
Author: United States. Great Lakes Basin Commission
Publisher:
ISBN:
Category : Great Lakes (North America)
Languages : en
Pages : 452
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Author:
Publisher:
ISBN:
Category : Soil dynamics
Languages : en
Pages : 490
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