In the branch of Agricultural Engineering, especially in Farm Machineryand Power sector, there is a need for a book exclusively dealing withvarious concepts and their applications in transparent and clear manner.So, an effort has been made to prepare this book entitled "Concepts ofFarm Machinery and Power" to meet the demand of students, teachers,RS.The book will be useful immensely to the students preparing for GATEexamination in AG papers and also for JRF, ARS, IFS examinations. Thechapters of the book deals with conceptual analysis of farm machineries,which are confusing and difficult to understand. It is expected that thetheoretical as well as numerical analysis of this book will sharpentheingenious power of the readers and help them to solve problemsquickly.Moreover, many problems are solved in different ways, which will helpthe readers in understanding and applying the concepts properly. I am extremely grateful to my teachers Dr. Subrata Karmakar, AssociateProfessor, Dept. of Farm Machinery and Power, Bidhan Chandra KrishiViswavidyalaya; Prof. Partha Sarathi Chattopadhaya, Professor, Dept.of Farm Machinery and Power, Bidhan Chandra Krishi Viswavidyalaya;Er. Ravi Reddy, Senior Technician, CFMTTI, Budni, M.P., and my B.Tech friends for their encouragement and kind cooperation.Sagacious suggestions and discrete criticism are welcome to improve thebook further, so that it becomes more relevant and more beneficial tothe readers in real terms.Finally, I envisage this attempt as an important step in removing hurdlesin the path of popularization of Agricultural Engineering. I hope that itwill fire imaginations and ability of many Agricultural Engineers in theprofession to produce such innovative works in future.“Agricultural Engineering— galvanizing agriculture”.
The finite element method (FEM) has been widely used to model interaction of tillage tool and soil, because it is capable to provide an accurate prediction of tillage resistance. However, there is little research on modeling soil-root interaction in soil tillage practice. The object of this paper is to advance a well adaptable numerical assistance to simulate the root-soil interaction and predict the resistance force on a stubble cutting tool. A 3D dynamic simulation model using the FEM was established to predict the resistance acting on the stubble-cutting blade in the present work. Soil was modeled as elastic-plastic material, corn stubble was simplified as an assembly of lines with various diameters, and soil and stubble were tied together as a complex. Two stubble-cutting blades with different cutting edges and two forward velocities were examined using a FE computation model and verified experimentally by field tests. Comparison result of simulation and experiment showed that the prediction from the FE model agreed well with the measurements in a field test. It can be concluded from these results that the FE model designed in this work is capable of being used as a convenient and dependable prediction tool in analysis and development of the working capacity of tillage tool.
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SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.