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Computerized Experimental Setup for Analysis of Four Bar Mechanism- A Demonstrative Model Approach

By Pranao G Kalmegh


Abstract — In the age of automation we can’t be dependent totally on manual working of any mechanism, it leads mechanism to take much time with less accuracy. In case of analysis of four bar mechanism if we go by graphical method it will take at least one hour just for single position of crank and if we analyze it with computer interfacing, it can be done in very short time for different positions of crank with greater accuracy. For third year mechanical engineering students, there are two experiments based on analysis of four bar mechanism in order to construct velocity & acceleration diagram in Theory of Machine Lab, but at this moment they use to do this with graphical method in which they can’t visualize actual motion of different links for different mechanisms. Hence we have prepared such equipment, which will give outputs like angular velocity (w), angular acceleration (a), linear velocity (v), linear acceleration (a) for fraction movement of crank within few minutes and visualization of actual motion of links for different mechanism can be studied, such as 1. Crank-crank mechanism 2. Crank-rocker mechanism 3. Rocker-rocker mechanism 4. Slider crank mechanism And also we have made an arrangement for its manual working and by obtaining both the result of manual & computer outputs we can compare it and this equipment will also help in introducing the students with interfacing knowledge. Keywords—four bar mechanism, visual basic, interfacing kit, demonstrative model, velocity and acceleration analysis. I

Year: 2014
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