A single thick-walled cylinder has an inner radius of 100 mm and an outer radius of 155 mm. The cylinder is subjected to an internal pressure of 65 MN/m? and an external pressure of 25 MN/m?. (b) To increase the FOS to the standards value, another cylinder is shrunk-fitted to make a compound cylinder. When the internal pressure load remains unchanged, the maximum hoop stress in the inner cylinder of the compound cylinder has been found to be reduced by 5% of the original value (i) Calculate the interface pressure at the common radius of the compound cylinder. (ii) Assume the cylinders are made of a copper alloy. Suggest alternative ways to increase the FOS and discuss whether the compound solution is better.
A single thick-walled cylinder has an inner radius of 100 mm and an outer radius of 155 mm. The cylinder is subjected to an internal pressure of 65 MN/m? and an external pressure of 25 MN/m?. (b) To increase the FOS to the standards value, another cylinder is shrunk-fitted to make a compound cylinder. When the internal pressure load remains unchanged, the maximum hoop stress in the inner cylinder of the compound cylinder has been found to be reduced by 5% of the original value (i) Calculate the interface pressure at the common radius of the compound cylinder. (ii) Assume the cylinders are made of a copper alloy. Suggest alternative ways to increase the FOS and discuss whether the compound solution is better.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A single thick-walled cylinder has an inner radius of 100 mm and an outer radius of 155
mm. The cylinder is subjected to an
internal pressure of 65 MN /m2 and an external pressure of
25 MN/m2.
(b) To increase the FOS to the standards value, another cylinder is
shrunk-fitted to make a compound cylinder. When the internal
pressure load remains unchanged, the maximum hoop stress in the inner cylinder of
the compound cylinder has been found to be reduced by 5% of the original value
(i)
Calculate the interface pressure at the common radius of the
compound cylinder.
(ii)
Assume the cylinders are made of a copper alloy. Suggest alternative
ways to increase the FOS and discuss whether the compound solution is
better.
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