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Question 1: A rotating shaft with a diameter of 30 mm is made of 1018 cold-rolled...
A rotating shaft is made of 42 mm by 4 mm thick cold-drawn round steel tubing and has a 6 mm diam...
A rotating shaft is made of 42 mm by 4 mm thick cold-drawn round steel tubing and has a 6 mm diameter hole drilled transversely through it. The shaft is subjected to a pulsating torque fluc- tuating from 20 to 160 Nm and a completely reversed bending moment of 200 Nm. The steel tubing has a minimum strength of Sut 410 MPa (60 ksi). The static stress-concentration factor for the hole is 2.4 for bending and 1.9 for torsion. The...
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...
Problem 2: A hot-rolled shaft shoulder has a large diameter D is 45 mm, the small...
Problem 2: A hot-rolled shaft shoulder has a large diameter D is 45 mm, the small diameter d is 30 mm, and the fille (notch) radius is 3 mm. The bending moment, and the steady torsion moments are 100 N.m, and 75 N. respectively. The reliability goal for the endurance limit is 0.90. If the shaft is made of AISI 1030 hot-roll steel, (a) Determine the fatigue stress concentration factors (Ks, and Ks). (b) Determine endurance limit (Se). (c) Determine...
A rotating circular shaft, machined from AISI 1095 Q&T steel, is subjected to a torque that...
A rotating circular shaft, machined from AISI 1095 Q&T
steel, is
subjected to a torque that varies from a value of 200 N.m to 400
N.m
and to a fluctuating bending moment that varies from a value of
-100
N.m to 300 N.m. Also an axial tensile force of 5 kN acts on the
element.
The torque and the bending moments have their peak values at
the
same time and their frequencies are same. Find the factor of
safety of...
The shaft shown in figure is subjected to a reversed bending torque .The moment is distributed along the shaft as if...
The shaft shown in figure is subjected to a reversed bending torque .The moment is distributed along the shaft as iflustra values 2000N.m and 3000 transmitted torque T-4000 N.m .The shaft is made of hardened steel having (Sy-900 MP, Su-1200 MP. ),and all important surfaces are finished by grinding For reliability of 99% and a safety factor of 2.5. (a) Determine the diameter d against static failure (b) Determine the diameter d against fatigue failure using Goodman approach if D-1.1d...
The stepped shaft shown at right has constant bending moment of 40 N.m at the step
1) The stepped shaft shown at right has constant bending moment of 40 N.m at the step, transmits 75 N.m constant torque and rotates at constant 500 rpm. The shaft was machined from 1040 cold-rolled steel with D = 22.8 mm, d = 19 mm and r = 1.9 mm. Determine fatigue factor of safety for infinite life with reliability of 99%. Use Case 3) Goodman failure and ignore Neuber notch sensitivity. 2) Check factor of safety for fatigue failure of...
Problems 1. (Subtotal: 21 points) A steady torque of 1500 Ibf in is transmitted by a...
Problems 1. (Subtotal: 21 points) A steady torque of 1500 Ibf in is transmitted by a machined shaft made of steel with an ultimate tensile strength of 100 kpsi. The transverse cross section at the location of a shoulder against which a gear sits is subjected to a bending moment which is a sinusoidal function of time with a maximum of 800 lbf-in. Furthermore, this cross section is the location for the maximum von Mises stress. The smaller diameter at...
An shown in the folloing figure, shaft A. made of AISI 1020 hot-rolled steelis welded to...
An shown in the folloing figure, shaft A. made of AISI 1020 hot-rolled steelis welded to a ised suppot and is subjected to loading by simultaneous forces Fr and F:via shat B. A theoretieal stress concentration factor K of 1.6 and K, of 1.4 is induced in the shat by the E in weld fillet 1 he, lengi h of shaft A from the fixed support to the connection at shaft B is 2 ft. The load cycles thom 1S0...
The rotating solid steel shaft is simply supported by bearings at points B and C and is driven by gear (not shown) which meshes with the spur gear at D
The rotating solid steel shaft is simply supported by bearings at points B and C and is driven by gear (not shown) which meshes with the spur gear at D, which has a 150-mm pitch diameter. The force F from the drive gear acts at a pressure angle of 20". The shaft transmits a torque to point A of TA = 340 N.m. The shaft is machined from steel with Sy= 420 MPa and Sut = 560 MPa. The fatigue...
The shaft shown in Fig. 3.17 has the following dimensions: r = 20 mm, d =...
The shaft shown in Fig. 3.17 has the following dimensions: r = 20 mm, d = 400 mm, and D = 440 mm. The shaft is subjected simul- taneously to a torque T = 20 kN . m, a bending moment M = 10 KN.m, and an axial force P = 50 kN. Calculate at the root of the notch (a) the max- imum principal stress, (b) the maximum shear stress, and (c) the octahedral stresses. x - -
A rotating shaft is made of 42 mm by 4 mm thick cold-drawn round steel tubing and has a 6 mm diameter hole drilled transversely through it. The shaft is subjected to a pulsating torque fluc- tuating from 20 to 160 Nm and a completely reversed bending moment of 200 Nm. The steel tubing has a minimum strength of Sut 410 MPa (60 ksi). The static stress-concentration factor for the hole is 2.4 for bending and 1.9 for torsion. The...
Problem 2: A hot-rolled shaft shoulder has a large diameter D is 45 mm, the small diameter d is 30 mm, and the fille (notch) radius is 3 mm. The bending moment, and the steady torsion moments are 100 N.m, and 75 N. respectively. The reliability goal for the endurance limit is 0.90. If the shaft is made of AISI 1030 hot-roll steel, (a) Determine the fatigue stress concentration factors (Ks, and Ks). (b) Determine endurance limit (Se). (c) Determine...
A rotating circular shaft, machined from AISI 1095 Q&T
steel, is
subjected to a torque that varies from a value of 200 N.m to 400
N.m
and to a fluctuating bending moment that varies from a value of
-100
N.m to 300 N.m. Also an axial tensile force of 5 kN acts on the
element.
The torque and the bending moments have their peak values at
the
same time and their frequencies are same. Find the factor of
safety of...
The shaft shown in figure is subjected to a reversed bending torque .The moment is distributed along the shaft as iflustra values 2000N.m and 3000 transmitted torque T-4000 N.m .The shaft is made of hardened steel having (Sy-900 MP, Su-1200 MP. ),and all important surfaces are finished by grinding For reliability of 99% and a safety factor of 2.5. (a) Determine the diameter d against static failure (b) Determine the diameter d against fatigue failure using Goodman approach if D-1.1d...
Problems 1. (Subtotal: 21 points) A steady torque of 1500 Ibf in is transmitted by a machined shaft made of steel with an ultimate tensile strength of 100 kpsi. The transverse cross section at the location of a shoulder against which a gear sits is subjected to a bending moment which is a sinusoidal function of time with a maximum of 800 lbf-in. Furthermore, this cross section is the location for the maximum von Mises stress. The smaller diameter at...
An shown in the folloing figure, shaft A. made of AISI 1020 hot-rolled steelis welded to a ised suppot and is subjected to loading by simultaneous forces Fr and F:via shat B. A theoretieal stress concentration factor K of 1.6 and K, of 1.4 is induced in the shat by the E in weld fillet 1 he, lengi h of shaft A from the fixed support to the connection at shaft B is 2 ft. The load cycles thom 1S0...
The shaft shown in Fig. 3.17 has the following dimensions: r = 20 mm, d = 400 mm, and D = 440 mm. The shaft is subjected simul- taneously to a torque T = 20 kN . m, a bending moment M = 10 KN.m, and an axial force P = 50 kN. Calculate at the root of the notch (a) the max- imum principal stress, (b) the maximum shear stress, and (c) the octahedral stresses. x - -
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