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A bar of steel has the minimum properties Se 276 MPa, Sy The bar is subjected...
A bar of steel has the minimum properties Se = 40 kpsi, Sy = 60 kpsi,...
A bar of steel has the minimum properties Se = 40 kpsi, Sy = 60 kpsi, and Sut = 80 kpsi. The bar is subjected to a steady torsional stress (τm) of 19 kpsi and an alternating bending stress of (σa) 10.2 kpsi. Find the factor of safety guarding against a static failure, and either the factor of safety guarding against a fatigue failure or the expected life of the part. Based on: A. modified Goodman criterion B. Gerber criterion...
A bar of steel has the minimum propertiesSe = 40 kpsi, Sy = 60 kpsi, and Sut = 80 kpsi.
A bar of steel has the minimum propertiesSe = 40 kpsi, Sy = 60 kpsi, and Sut = 80 kpsi. The bar is subjected to a steady torsional stress (τm) of 19 kpsi and an alternating bending stress of (σa) 9.6 kpsi. Find the factor of safety guarding against a static failure, and either the factor of safety guarding against a fatigue failure or the expected life of the part.A. Find the factor of safety. For the fatigue analysis, use...
A steel bar has Sut - 590 MPa and Sy -490 MPa. It is subjected to...
A steel bar has Sut - 590 MPa and Sy -490 MPa. It is subjected to a t30 kN alternating load through the middle What is the factor of safety for static failure? Determine if the part meets the criteria for infinite life, and if not, determine the number of cycles to failure. a. b.
The shaft shown is made of AISI 1040 CD steel
The shaft shown is made of AISI 1040 CD steel. It is machine finished and is subjected to a repeated bending stress of 15ksi. The diameter at the shoulder is 1.3in and will be used at a temperature of 400F. Estimate: (a) The endurance limit at 95% reliability (b) Endurance strength at 105 cycles and show on S-N plot 10 (c) Plot the design region by Modified Goodman theory and determine if failure is by yield or fatigue (d) Find the factor of safety...
Problem 5. A thin-walled cylindrical pressure vessel of radius 50 mm and thickness 5 -mm, made of steel, is subject...
Problem 5. A thin-walled cylindrical pressure vessel of radius 50 mm and thickness 5 -mm, made of steel, is subjected to an internal pressure which is fluctuating from -0.2P to P. (i) Determine the safe pressure P according to each of the following criteria': (a) The Soderberg Criterion, (b) The Goodman Criterion, and (c) The Gerber Criterion (ii) Draw these criteria on same coordinates and include the load line. (iv) If a 20-MPa pressure is used what would be the...
A shaft is to be manufactured from a steel having an ultimate tensile strength of 420...
A shaft is to be manufactured from a steel having an ultimate tensile strength of 420 MPa, and a yield stress of 305 MPa. The shaft has a solid circular cross section of diameter 50 mm and is subjected to a sinusoidally varying torque ranging from 60 Nm to 130 Nm. It has also been established that the shaft has a fully-corrected endurance limit of 129 MPa and that a torsional fatigue stress concentration factor, kf = 2.1, exists at...
The cantilever bar in the figure is made from AISI 1018 CD steel and is statically loaded
The cantilever bar in the figure is made from AISI 1018 CD
steel and is statically loaded with Fy = 800 N, and Fx = Fz = 0.
The fillet radius at the wall is 2 mm with theoretical stress
concentrations of 1.5 for bending, 1.2 for axial, and 2.1 for
torsion.Sut = 440 MPa = 64 kpsi, Sy = 370 MPa = 54 kpsi. Analyze the
stress situation in rod AB by obtaining the following
information.a) Determine the precise...
1) [40 pts] Determination of minimum shaft diameter using DE-Gerber, DE-ASME Elliptic, DE-Soderberg, and DE-Goodman criteria...
1) [40 pts] Determination of minimum shaft diameter using DE-Gerber, DE-ASME Elliptic, DE-Soderberg, and DE-Goodman criteria A shaft is loaded in bending and torsion such that M. = 66 Nm, T. = 42.496 Nm, Mm = 51.858 Nm, and Tm = 33 N m. For the shaft, S, = 700 MPa and S, = 560 MPa, and a fully corrected endurance limit of S, = 210 MPa is assumed. Let K = 2.2 and Kis = 1.8. With a design...
Question 1: A rotating shaft with a diameter of 30 mm is made of 1018 cold-rolled...
Question 1: A rotating shaft with a diameter of 30 mm is made of 1018 cold-rolled steel. The stress concentration factor is 2.366, and the shear stress concentration factor is 1.75 respectively. The notch sensitivity is 0.78 and for shear it's 0.96 Estimate the factor of safety guarding against fatigue failure using modified-Goodman and Soder- berg for each of the following loading conditions: a) The shaft is subjected to a completely reversed torque of 120 N.m in phase with a...
A rotating shaft is made of AISI 1035 CD steel is subjected to an axial load of 710N
A rotating shaft is made of AISI 1035 CD steel is subjected to an axial load of 710N, a fluctuating torque load from 60 to 120 N.m, and a completely reversed bending moment of 160N.m. The shaft has a diameter of 30mm, and operates at T=250°C, and has a life reliability of 95%. Note that the fatigue stress-concentration factor for bending Kfb is 1.49 and that for torque Kft is 2.65..1. Draw the Yield (Langer) line 2. Modified Goodman line. 3. Calculate...
A steel bar has Sut - 590 MPa and Sy -490 MPa. It is subjected to a t30 kN alternating load through the middle What is the factor of safety for static failure? Determine if the part meets the criteria for infinite life, and if not, determine the number of cycles to failure. a. b.
Problem 5. A thin-walled cylindrical pressure vessel of radius 50 mm and thickness 5 -mm, made of steel, is subjected to an internal pressure which is fluctuating from -0.2P to P. (i) Determine the safe pressure P according to each of the following criteria': (a) The Soderberg Criterion, (b) The Goodman Criterion, and (c) The Gerber Criterion (ii) Draw these criteria on same coordinates and include the load line. (iv) If a 20-MPa pressure is used what would be the...
The cantilever bar in the figure is made from AISI 1018 CD
steel and is statically loaded with Fy = 800 N, and Fx = Fz = 0.
The fillet radius at the wall is 2 mm with theoretical stress
concentrations of 1.5 for bending, 1.2 for axial, and 2.1 for
torsion.Sut = 440 MPa = 64 kpsi, Sy = 370 MPa = 54 kpsi. Analyze the
stress situation in rod AB by obtaining the following
information.a) Determine the precise...
1) [40 pts] Determination of minimum shaft diameter using DE-Gerber, DE-ASME Elliptic, DE-Soderberg, and DE-Goodman criteria A shaft is loaded in bending and torsion such that M. = 66 Nm, T. = 42.496 Nm, Mm = 51.858 Nm, and Tm = 33 N m. For the shaft, S, = 700 MPa and S, = 560 MPa, and a fully corrected endurance limit of S, = 210 MPa is assumed. Let K = 2.2 and Kis = 1.8. With a design...
Question 1: A rotating shaft with a diameter of 30 mm is made of 1018 cold-rolled steel. The stress concentration factor is 2.366, and the shear stress concentration factor is 1.75 respectively. The notch sensitivity is 0.78 and for shear it's 0.96 Estimate the factor of safety guarding against fatigue failure using modified-Goodman and Soder- berg for each of the following loading conditions: a) The shaft is subjected to a completely reversed torque of 120 N.m in phase with a...
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