Synopsis
Design formulas and the mathematical models they yield are widely used in creating today's computer programs for designing machines and industrial dies. However the predictions of these programs do not always agree with the practical results. It is therefore essential that engineers have access to the formulas on which mathematical models are based in order to improve existing computer programs or develop entirely new ones. Plastics engineers in particular need a simple way to search for appropriate equations since they often deal with several different fields of engineering. By drawing together formulas from these fields, this book makes it easier to write computer design programs and to change existing ones in order to obtain a better fit with experimental results. The formulas are classified according to subject: rheology, thermodynamics, heat transfer, and part design. Each chapter covers the relevant relations in a particular field. A separate chapter is devoted to the practical equations for designing extrusion and injection molding equipment. Numerous thoroughly worked-out problems illustrate the use of the formulas.
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Synopsis
The formulas in this book are classified for specific areas, including rheology, thermodynamics, heat trasfer, and part design. Table of Contents Formulas of Rheology Newtonian Fluids Viscous Shear Flow of Polymer Melts Viscoelastic Behavior of Polymers Thermodynamic Properties Formulas for Heat Transfer: Steady-state and Unsteady-state Conduction Heat Conduction with Dissipation Dimensionless Groups Heat Transfer by Convection and Radiation Dielectric Heating Fick's Law of Diffusion Designing Plastics Parts Formulas for Designing Extrusion and Injection Molding Equipment: Extrusion Dies, Screws, and Injection Molding.
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