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Govind Ballabh Pant University of Agriculture and Technology, Pantnagar

After independence, development of the rural sector was considered the primary concern of the Government of India. In 1949, with the appointment of the Radhakrishnan University Education Commission, imparting of agricultural education through the setting up of rural universities became the focal point. Later, in 1954 an Indo-American team led by Dr. K.R. Damle, the Vice-President of ICAR, was constituted that arrived at the idea of establishing a Rural University on the land-grant pattern of USA. As a consequence a contract between the Government of India, the Technical Cooperation Mission and some land-grant universities of USA, was signed to promote agricultural education in the country. The US universities included the universities of Tennessee, the Ohio State University, the Kansas State University, The University of Illinois, the Pennsylvania State University and the University of Missouri. The task of assisting Uttar Pradesh in establishing an agricultural university was assigned to the University of Illinois which signed a contract in 1959 to establish an agricultural University in the State. Dean, H.W. Hannah, of the University of Illinois prepared a blueprint for a Rural University to be set up at the Tarai State Farm in the district Nainital, UP. In the initial stage the University of Illinois also offered the services of its scientists and teachers. Thus, in 1960, the first agricultural university of India, UP Agricultural University, came into being by an Act of legislation, UP Act XI-V of 1958. The Act was later amended under UP Universities Re-enactment and Amendment Act 1972 and the University was rechristened as Govind Ballabh Pant University of Agriculture and Technology keeping in view the contributions of Pt. Govind Ballabh Pant, the then Chief Minister of UP. The University was dedicated to the Nation by the first Prime Minister of India Pt Jawaharlal Nehru on 17 November 1960. The G.B. Pant University is a symbol of successful partnership between India and the United States. The establishment of this university brought about a revolution in agricultural education, research and extension. It paved the way for setting up of 31 other agricultural universities in the country.

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  • ThesisItemOpen Access
    MODELING AND SIMULATION OF CUTTING FORCES IN SURFACE GRINDING PROCESS AT MICRO LEVEL USING MATLAB
    (G. B. Pant University of Agriculture & Technology, Pantnagar-263145, 2023-02) Singh, Yogendra Kumar; Pankaj
    Grinding is a major manufacturing process that accounts for approximately 20– 25% of total machining expenditures in industrialized countries. Everything used todayhas been machined by grinding at some point in its manufacturing process or has been produced by machines that owe their functionality to grinding operations. Grinding forces play a key role in the grinding process by influencing the specific power consumption, heat generation at the interface of abrasive cutting grains and the workpiece, quality of the ground workpiece surface and various other performance parameters. So, a mathematical model to estimate the grinding forces would help to achieve the target. Previously developed models were usually based on the assumption which might contradict with the reality as they didn’t consider the grain-workpiece interaction at the micro level (i.e., rubbing, ploughing and cutting). Also, most previous studies could only be used to predict average values on wheel basis of grinding forces because the most models were built based on average grain cutting depth or average chip thickness, and none of the grinding force details at the micro level. A new model to predict the grinding forces at micro levelof grain-workpiece interaction have been developed in the present study and validated with help of MATLAB and data available in the previous studies. The effects of grinding parameters such as depth of cut, workpiece speed, wheel speed and size of abrasive grains was studied. The predicted grinding forces were almost identical to the grinding forces experimentally estimated by the previous researchers, with an average percentage error of 6.09%. It was found that the Size of the abrasive grains (abrasive grit number) have the largest impact on rubbing, ploughing and cutting contributions. Depths of cut have the second largest effects and the dominant force component could probably be changed from rubbing to cutting by using different cut depths. The effects of wheel speeds can also be seen: fast wheel speeds lead to less rubbing forces and more cutting forces, while the effects of workpiece feed rates seem to be limited. Therefore, high wheel speeds and large workpiece feed rates are recommended to achieve high material removal rates. (