The flat bar shown in the figure is subjected to tensile forces P = 3000 lb. The bar has thickness t = 0.25 in. a) If the designer wants to make a stepped bar with shoulder fillets as shown in the figure, determine R the maximum stresses for fillet radii R = 0.25 in. and R = 0.5 in. if the bar widths are b = 4.0 in. and c = 2.5 in. b) Comment on the relation between the stress and the fillet radius each time it is increased. c) What is the factor of safety for each fillet radius if the part is made of cast iron Sat = 30 ksi? Solution: 3.0 2.8 F1.15 D/d = 2 D 2.6 1.5 2.4 - P P 2.2 -1.05 A td к, 2.0 - 3.0 1.8 - 1.6E1.01 1.4 1.2 1.0 0.05 0.10 0.15 0.20 0.25 0.30 r/d

The flat bar shown in the figure is subjected to tensile forces P = 3000 lb. The bar has thickness t = 0.25 in. a) If the designer wants to make a stepped bar with shoulder fillets as shown in the figure, determine R the maximum stresses for fillet radii R = 0.25 in. and R = 0.5 in. if the bar widths are b = 4.0 in. and c = 2.5 in. b) Comment on the relation between the stress and the fillet radius each time it is increased. c) What is the factor of safety for each fillet radius if the part is made of cast iron Sat = 30 ksi? Solution: 3.0 2.8 F1.15 D/d = 2 D 2.6 1.5 2.4 - P P 2.2 -1.05 A td к, 2.0 - 3.0 1.8 - 1.6E1.01 1.4 1.2 1.0 0.05 0.10 0.15 0.20 0.25 0.30 r/d

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter2: Axially Loaded Members

Section: Chapter Questions

Problem 2.10.1P: The flat bars shown in parts a and b of the figure are subjected to tensile forces P = 3.0 kips....

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