A plate with a center hole is subjected to both of axial force (F) and bending moment (M; actingabout weak axis). Predict the fatigue failure with 50% reliability. The plate is machined from alloysteel (S.= 470 MPa and Sy= 350 MPa).MM[Top View]MM[Side View]Where, w=35mm, d=4mm, h=2mm.1) Calculate fatigue strength (S,).2) Calculate o. and o. for two loading cases: (a) F=Fosin (wt-10) and M=0F=Fosin (t+10) +k and M=Moand (b)Note: F.= k = 2 kN and M.= 4 Nm3) Determine if the bar is safe against fatigue failure and calculate safety factor for the cyclicloading cases; assume (a) Obm = 0 MPa and O = 80 MPa and (b) oim = 85 MPa and OE = 70MPa regardless of the answers in question 2).

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A plate with a center hole is subjected to both of axial force (F) and bending moment (M; acting about weak axis). Predict the fatigue failure with 50% reliability. The plate is machined from alloy steel (S.= 470 MPa and Sy= 350 MPa). M [Top View] M M (Side View] Where, w-35mm, d34mm, h=2mm. 1) Calculate fatigue strength (S,). and (b) 2) Calculate . and o. for two loading cases: (a) F=Fosin (ot-10) and M=0 F=Fosin (t+10) +k and M=Mo Note: F.=k = 2 kN and M.= 4 Nm 3) Determine if the bar is safe against fatigue failure and calculate safety factor for the cyclic loading cases; assume (a) obm = 0 MPa and O = 80 MPa and (b) oim = 85 MPa and o = 70 MPa regardless of the answers in question 2).

A plate with a center hole is subjected to both of axial force (F) and bending moment (M; acting about weak axis). Predict the fatigue failure with 50% reliability. The plate is machined from alloy steel (S.= 470 MPa and Sy= 350 MPa). M [Top View] M M (Side View] Where, w-35mm, d34mm, h=2mm. 1) Calculate fatigue strength (S,). and (b) 2) Calculate . and o. for two loading cases: (a) F=Fosin (ot-10) and M=0 F=Fosin (t+10) +k and M=Mo Note: F.=k = 2 kN and M.= 4 Nm 3) Determine if the bar is safe against fatigue failure and calculate safety factor for the cyclic loading cases; assume (a) obm = 0 MPa and O = 80 MPa and (b) oim = 85 MPa and o = 70 MPa regardless of the answers in question 2).

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Thermal Properties of Materials

In mechanical engineering, the thermal property is represented as the physical quantity that is relevant to the application of heat. The thermal properties are evaluated by variations in any specific material due to low heat or high heat. The quantities that influence the thermal property of the materials are mass, density, temperature, and many others.

Question

A plate with a center hole is subjected to both of axial force (F) and bending moment (M; acting
about weak axis). Predict the fatigue failure with 50% reliability. The plate is machined from alloy
steel (S.= 470 MPa and Sy= 350 MPa).
M
M
[Top View]
M
M
[Side View]
Where, w=35mm, d=4mm, h=2mm.
1) Calculate fatigue strength (S,).
2) Calculate o. and o. for two loading cases: (a) F=Fosin (wt-10) and M=0
F=Fosin (t+10) +k and M=Mo
and (b)
Note: F.= k = 2 kN and M.= 4 Nm
3) Determine if the bar is safe against fatigue failure and calculate safety factor for the cyclic
loading cases; assume (a) Obm = 0 MPa and O = 80 MPa and (b) oim = 85 MPa and OE = 70
MPa regardless of the answers in question 2).

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Example: Convert the change in length data in Table 3-2 to engineering stress and strain and plot a stress-strain curve Homework- help Table 3-2 The results of a tensile test of a 0.505 in. diameter aluminum alloy test bar, initial length (1o) = 2 in. Calculated LTO Load (Ib) Change in Length (in.) Stress (psi) Strain (in./in.) 0.000 1000 0.001 0.0005 4,993 14,978 24,963 34,948 37,445 39,442 39,941 39,691 37,944 3000 0.003 0.0015 5000 0.005 0.0025 7000 0.007 0.0035 7500 0.030 0.0150 7900 0.080 0.0400 8000 (maximum load) 0.120 0.0600 7950 0.160 0.0800 7600 (fracture) 0.205 0.1025