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============ Q1/Create an estimated (S-N) diagram and define its equation for an axial fully reversed loaded steel bar. Its cross section shown in figure (1). Determine the life in cycle that can be expected if the alternating stress is (127Mpa). The bar surface finch is hot rolled. The operating temperature is (506 Co) and (Out = 577 Mpa). 120 mm 4 Q2/A cantilever beam, shown in figure (2), is to be made from [Wrought-Aluminum Alloys- 3003- cold rolled]. If the desired design factor is (N=2.5), (P=4kN), and (F=6kN). Using a suitable failure theory, find the appropriate beam thickness h. P D=15cm d d=100mm F r=20mm L= 25 cm Q3/ a steel plate shown in figure (3): Sut=689 Mpa, reliability is 90%, factor of safety is 2, the size factor is 0.87. machined surface. Determine the plate thickness (t) for infinite life. Note: All dimensions are in mm. P= ± 50 kN <-100 Fig. 3 177 5r P = ± 50 kN 50

============ Q1/Create an estimated (S-N) diagram and define its equation for an axial fully reversed loaded steel bar. Its cross section shown in figure (1). Determine the life in cycle that can be expected if the alternating stress is (127Mpa). The bar surface finch is hot rolled. The operating temperature is (506 Co) and (Out = 577 Mpa). 120 mm 4 Q2/A cantilever beam, shown in figure (2), is to be made from [Wrought-Aluminum Alloys- 3003- cold rolled]. If the desired design factor is (N=2.5), (P=4kN), and (F=6kN). Using a suitable failure theory, find the appropriate beam thickness h. P D=15cm d d=100mm F r=20mm L= 25 cm Q3/ a steel plate shown in figure (3): Sut=689 Mpa, reliability is 90%, factor of safety is 2, the size factor is 0.87. machined surface. Determine the plate thickness (t) for infinite life. Note: All dimensions are in mm. P= ± 50 kN <-100 Fig. 3 177 5r P = ± 50 kN 50

Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
9th Edition
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Barry J. Goodno, James M. Gere
Chapter1: Tension, Compression, And Shear
Section: Chapter Questions
Problem 1.7.10P: Three round, copper alloy bars having the same length L but different shapes are shown, in the...
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============ Q1/Create an estimated (S-N) diagram and define its equation for an axial fully reversed loaded steel bar. Its cross section shown in figure (1). Determine the life in cycle that can be expected if the alternating stress is (127Mpa). The bar surface finch is hot rolled. The operating temperature is (506 Co) and (Out = 577 Mpa). 120 mm 4 Q2/A cantilever beam, shown in figure (2), is to be made from [Wrought-Aluminum Alloys- 3003- cold rolled]. If the desired design factor is (N=2.5), (P=4kN), and (F=6kN). Using a suitable failure theory, find the appropriate beam thickness h. P D=15cm d d=100mm F r=20mm L= 25 cm Q3/ a steel plate shown in figure (3): Sut=689 Mpa, reliability is 90%, factor of safety is 2, the size factor is 0.87. machined surface. Determine the plate thickness (t) for infinite life. Note: All dimensions are in mm. P= ± 50 kN <-100 Fig. 3 177 5r P = ± 50 kN 50
Transcribed Image Text:============ Q1/Create an estimated (S-N) diagram and define its equation for an axial fully reversed loaded steel bar. Its cross section shown in figure (1). Determine the life in cycle that can be expected if the alternating stress is (127Mpa). The bar surface finch is hot rolled. The operating temperature is (506 Co) and (Out = 577 Mpa). 120 mm 4 Q2/A cantilever beam, shown in figure (2), is to be made from [Wrought-Aluminum Alloys- 3003- cold rolled]. If the desired design factor is (N=2.5), (P=4kN), and (F=6kN). Using a suitable failure theory, find the appropriate beam thickness h. P D=15cm d d=100mm F r=20mm L= 25 cm Q3/ a steel plate shown in figure (3): Sut=689 Mpa, reliability is 90%, factor of safety is 2, the size factor is 0.87. machined surface. Determine the plate thickness (t) for infinite life. Note: All dimensions are in mm. P= ± 50 kN <-100 Fig. 3 177 5r P = ± 50 kN 50
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