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Geometric modelling:
Geometric modelling is an integral part of any Computer-Aided-Design (CAD) system. Integration of geometric modelling; computer graphics along with design principles develops CAD tools. Therefore, in this unit, a brief treatment of representation of curves is presented. Curve representation in parametric form would increase the graphical representation of curves apart from ease of computation. Synthetic forms of curves such like Hermite cubic B-Splines, Bezier, B-Splines and Nurbs have been extensively used to represent several practical situations being modelled in CAD systems. A detailed treatment of these curves is presented. The features of Wire-frame models and its applications are also discussed.
DENSIT Y (ρ ): Density is defined as mass per unit volume; Density = mass/ volume; = m/v, kg/m 3 P for Hg = 13.6 × 103 kg/m 3 for water = 1000 kg/m 3 Specifi
Define the Effect of Feed Increase in feed rate deteriorates surface finish. It is observed that a rate of feed in the range from0.12 to 0.15 mm per revolution has a negligible
Select a standard rolled steel I-section for the simply supported beam shown in figure below. Select an appropriate factor of safety and material strength. Include references for
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Calculated the slope of the cantilever: Calculated the slope of the cantilever given in Example 6 at its free end. Solution To find out rotation in a beam we must have
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