Introduction There are three main methods of transmitting power: mechanical, electrical and fluid power. Fluid power systems can transmit power more economically over greater distance. The work is accomplished by a pressurized fluid bearing directly on an operating fluid cylinder. A fluid cylinder produces a force resulting in linear motion. The fluid power systems are well suited in many industries because of their many advantages: easy and accuracy of control, multiplication of force, constant force or torque and simplicity, safety and economy Figure 1 presents a fluid power hydraulic press system. The purpose of this circuit is to control motion of the cylinder. The cylinder must extend, bottom out and hold pressure on the plates for some fixed period of time. During this time, pressure must be maintained in order to maintain the contact pressure between the plates (Figure 1b). The popular applications are bonding two pieces of metal together with an adhesive, holding a mold closed while the material is setting etc. If pressure is to be maintained, the directional control valve (DVC) must be left in the extended position even after the cylinder is fully extended (Figure 1b). Whenever the cylinder is bottomed out, flow of oil is going over the pressure relief valve. This is wastage of fluid power. This study should focus on how to manage the wastage of fluid power. This can be achieved through inserting additional parts in the fluid circuit diagram. Simulation of a hydraulic circuit in MATLAB is a good way to study and analyze the hydraulic circuits you design. In MATLAB, you have to use SimScape (Simhydraulic). You have to go to Fluids, then Hydraulics (isothermal). From the library menu, you can draw the circuit. This menu has various components needed to construct a fluid circuit diagram. By choosing the right components, the hydraulic symbols are assembled for analysis. Your submission should have the following items and headings: Introduction to fluid power systems relating to hydraulic press systems Literature review on Conventional hydraulic press systems using standard papers from journals, conferences, books and reports Working principles of existing hydraulic press systems. Develop a case based on your research and develop a set of assumptions for your proposed design (operating pressure can be about 170 bars for example) Design and analysis of a new or modified hydraulic press system that gives better control: flow control, pressure control and directional control using sufficient minimum controlling devices and valves Safety check of pipes and pressure cylinders (thick-walled or thin-walled analysis) Prepare an Excel calculation sheet to put input data, standard equations, creating plots to compare Health and safety practices required for maintaining the system. Use proper drafting tools to show changes in your new design. Draw necessary fluid circuit diagrams Apply SimScape and carry out analysis of your new design: piston positions, velocity, flow rate etc. vs time.
Subject Name: Engineering
Level: Undergraduate
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