Mechanical Design
During cyclic loading, stress concentrations are….?
A Applicable, calculated using the same factor as for static loading
B Not applicable, this is already estimated by the endurance limit
C Not applicable, stress cannot be concentrated by a cyclic load
D Applicable, using distinct from the static loading stress concentration factor
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Pls solve the question regarding design of machine elements. Also Pls note that the values in...
Pls solve the question regarding design of machine
elements. Also Pls note that the values in the diagram are not to
be taken and the values from the question are to be considered.
5. A cantilever is 200mm long. It is subjected to an axial load which varies from 100N compression to 400N tension. It also takes a transverse load at its free end which varies from 70N up to 120N down. The cantilever is of circular cross-section. It is...
[3]. (3 marks) Figure below shows a bolted joint subjected to an external force P that fluctuates...
[3]. (3 marks) Figure below shows a bolted joint subjected to an external force P that fluctuates from 0 to 7 kips The steel bolt specification is 5/8"-11 UNC, SAE grade 5 material with rolled threads. The clamped members are steel of length 1.25 in each (with a total length of 2.5 in). Plain wide washers are utilized at both ends of the bolt. [a]. Using the Goodman line, determine the factor of safety guarding against fatigue failure for the...
A 1045 hot rolled steel rod undergoes axial cyclic loading from a minimum stress of 2...
A 1045 hot rolled steel rod undergoes axial cyclic loading from a minimum stress of 2 kpsi to a maximum of 10 kpsi. The rod has a hole in the center of bar, with a Kt 1.7, and notch sensitivity factor 0.9. The yield strength of bar is 45 kpsi, ultimate strength 82 kpsi, fully endurance limit of 20 kpsi, fatigue strength fraction 0.85. 1. a. Using modified goodman criteria, find FOS b. lfinfinite life is not predicted estimate the...
(a) Part 1-7 6) Leeding Digun The figure shows the tentative design of a cantilevered machine component, and the c...
(a) Part 1-7 6) Leeding Digun The figure shows the tentative design of a cantilevered machine component, and the corresponding loading diagram. The component resists a load P varying from 0 to 3400 1bs., for an infinite number of cycles at ambient room tem- perature and 95% reliabilfity. The part is machined from cold drawn steel with an ultimate strength of S 64 kpsi and a yield strength S, = 54 kpsi. con for the part, if the stress c...
answer E,F,G and H please 2. A bar of steel undergoes cyclic loading such that max...
answer E,F,G and H please
2. A bar of steel undergoes cyclic loading such that max = 60 kpsi and Omin = -20 kpsi. For the material, Sut = 80 kpsi, 5y = 65 kpsi,ka = 1.107. ky = 0.858, ke = ka = k, = k, = 1, and f = 0.9. (a) Calculate the alternating stress. (2 points) (b) Calculate the meani median) stress. (2 points) (c) Calculate the fully corrected endurance limit. (6 points) (d) Calculate the...
131- (3 marks) Figure below shows a bolted joint subjected to an external force P that fluctuates...
131- (3 marks) Figure below shows a bolted joint subjected to an external force P that fluctuates from 0 to 7 kips. The steel bolt specification is 5/8"-11 UNC, SAE grade 5 material with rolled threads. The clamped members are steel of length 1.25 in each (with a total length of 2.5 in). Plain wide washers are utilized at both ends of the bolt. [a]. Using the Goodman line, determine the factor of safety guarding against fatigue failure for the...
The material is steel. hence the ultimate strength can be found.
the
material is steel. hence the ultimate strength can be found.
131- (3 marks) Figure below shows a bolted joint subjected to an external force P that fluctuates from 0 to 7 kips. The steel bolt specification is 5/8"-11 UNC, SAE grade 5 material with rolled threads. The clamped members are steel of length 1.25 in each (with a total length of 2.5 in). Plain wide washers are utilized at both ends of the bolt. [a]. Using the Goodman line,...
With the ne ed to determine the malllum I You are an engineer at company XYZ, and you are dealing...
with the ne ed to determine the malllum I You are an engineer at company XYZ, and you are dealing you can apply to a set of bolted/clamped plates, such that you get infinite life. a) (1.5 pt) If you have an coarse thread M12 x 1.75 bolt of SAE Class 5.8, what would you recommend as the initial tightening force in the bolt? Is this initial foree in the bolt the same as the elamped members?Hint: Use F0.9A Sp...
(15 marks) Question Four The fully machined steel connecting link is made from a steel with...
(15 marks) Question Four The fully machined steel connecting link is made from a steel with an ultimate tensile strength of 700MPa. The holes at either end of the link are to carry pin connectors. The link is 10mm thick The link is axially loaded, with a fully reversed load. Assuming infinite life and a safety factor of 2, estimate the maximum load that may be applied to the link. Note that as axially loaded members will only need to...
a solid circular shaft of radius a is subjected to the combined axial load P, bending moment M, and torsional moment T shown. Assume that M = Pa/2 and T = Pa/2. The axial load is constant while the m...
a solid circular shaft of radius a is subjected to the
combined axial load P, bending moment M, and torsional moment T
shown. Assume that M = Pa/2 and T = Pa/2. The axial load is
constant while the moments M and T are completely reversed cyclic
(recall, completely reversed cyclic means having the same amplitude
in positive and negative sense in a cycle). The material of the
shaft has the yield stress of 300 MPa and endurance limit of...
Pls solve the question regarding design of machine
elements. Also Pls note that the values in the diagram are not to
be taken and the values from the question are to be considered.
5. A cantilever is 200mm long. It is subjected to an axial load which varies from 100N compression to 400N tension. It also takes a transverse load at its free end which varies from 70N up to 120N down. The cantilever is of circular cross-section. It is...
[3]. (3 marks) Figure below shows a bolted joint subjected to an external force P that fluctuates from 0 to 7 kips The steel bolt specification is 5/8"-11 UNC, SAE grade 5 material with rolled threads. The clamped members are steel of length 1.25 in each (with a total length of 2.5 in). Plain wide washers are utilized at both ends of the bolt. [a]. Using the Goodman line, determine the factor of safety guarding against fatigue failure for the...
A 1045 hot rolled steel rod undergoes axial cyclic loading from a minimum stress of 2 kpsi to a maximum of 10 kpsi. The rod has a hole in the center of bar, with a Kt 1.7, and notch sensitivity factor 0.9. The yield strength of bar is 45 kpsi, ultimate strength 82 kpsi, fully endurance limit of 20 kpsi, fatigue strength fraction 0.85. 1. a. Using modified goodman criteria, find FOS b. lfinfinite life is not predicted estimate the...
(a) Part 1-7 6) Leeding Digun The figure shows the tentative design of a cantilevered machine component, and the corresponding loading diagram. The component resists a load P varying from 0 to 3400 1bs., for an infinite number of cycles at ambient room tem- perature and 95% reliabilfity. The part is machined from cold drawn steel with an ultimate strength of S 64 kpsi and a yield strength S, = 54 kpsi. con for the part, if the stress c...
answer E,F,G and H please
2. A bar of steel undergoes cyclic loading such that max = 60 kpsi and Omin = -20 kpsi. For the material, Sut = 80 kpsi, 5y = 65 kpsi,ka = 1.107. ky = 0.858, ke = ka = k, = k, = 1, and f = 0.9. (a) Calculate the alternating stress. (2 points) (b) Calculate the meani median) stress. (2 points) (c) Calculate the fully corrected endurance limit. (6 points) (d) Calculate the...
131- (3 marks) Figure below shows a bolted joint subjected to an external force P that fluctuates from 0 to 7 kips. The steel bolt specification is 5/8"-11 UNC, SAE grade 5 material with rolled threads. The clamped members are steel of length 1.25 in each (with a total length of 2.5 in). Plain wide washers are utilized at both ends of the bolt. [a]. Using the Goodman line, determine the factor of safety guarding against fatigue failure for the...
the
material is steel. hence the ultimate strength can be found.
131- (3 marks) Figure below shows a bolted joint subjected to an external force P that fluctuates from 0 to 7 kips. The steel bolt specification is 5/8"-11 UNC, SAE grade 5 material with rolled threads. The clamped members are steel of length 1.25 in each (with a total length of 2.5 in). Plain wide washers are utilized at both ends of the bolt. [a]. Using the Goodman line,...
with the ne ed to determine the malllum I You are an engineer at company XYZ, and you are dealing you can apply to a set of bolted/clamped plates, such that you get infinite life. a) (1.5 pt) If you have an coarse thread M12 x 1.75 bolt of SAE Class 5.8, what would you recommend as the initial tightening force in the bolt? Is this initial foree in the bolt the same as the elamped members?Hint: Use F0.9A Sp...
(15 marks) Question Four The fully machined steel connecting link is made from a steel with an ultimate tensile strength of 700MPa. The holes at either end of the link are to carry pin connectors. The link is 10mm thick The link is axially loaded, with a fully reversed load. Assuming infinite life and a safety factor of 2, estimate the maximum load that may be applied to the link. Note that as axially loaded members will only need to...
a solid circular shaft of radius a is subjected to the
combined axial load P, bending moment M, and torsional moment T
shown. Assume that M = Pa/2 and T = Pa/2. The axial load is
constant while the moments M and T are completely reversed cyclic
(recall, completely reversed cyclic means having the same amplitude
in positive and negative sense in a cycle). The material of the
shaft has the yield stress of 300 MPa and endurance limit of...
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