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Pressure Vessel and Types of Stresses Exam

Content type
User Generated
Subject
Engineering
Type
Exam Practice
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A pressure vessel with dimensions d
o
=5 in. and t=3/32 in. is put under the following combined loading:
internal pressure P
i
=380 psi, axial load F
x
=7 kips and torque T=900 ft #.
a. Check that the pressure vessel can be classified as thin walled
b. Calculate all the types of stresses
c. Draw the stress elements with values
d. Combine the stresses to determine the maximum shear stress τ
max
[psi]
e. Determine the safety factor N given that the part has a yield strength S
y
=20 ksi
f. Comment on the safety factor
Solution
a. Check that the pressure vessel can be classified as thin walled
A pressure vessel can be classified as thin walled when its thickness is less than or equal to 1/10 or
the Inner Radius.
 


 












  
b. Calculate all the types of stresses
1. Tangential Stress














2. Longitudinal Stress


3. Axial Stress







4. Shear Stress

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