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2 cards from this section. Quick, good the night before a test.
What is the formula for hoop stress in a thin-walled cylinder?
Think about the variables—pressure, radius, thickness.
What type of cylinder is characterized by t << r?
Consider the relationship between thickness and radius.
What is hoop stress primarily influenced by?
Consider how pressure affects a cylinder.
True or False: Lame's equations only apply to thin-walled cylinders.
Think about the cylinder type Lame's equations serve.
Consider a thick-walled cylinder with an internal radius of 0.3 m and external radius of 0.4 m. If the internal pressure is 80 MPa, calculate the radial and hoop stress at the inner radius.
Don't forget to use both equations for a complete understanding!
A boiler operates at a temperature that increases the thermal stress by 15 MPa and internal pressure adds 90 MPa of mechanical stress. What is the total stress on a critical component?
Add the stresses carefully to get the total.
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