A Thin-Walled Spherical Tank Has a Diameter of 0 $20 \mathrm { MPa }$

question 13

Multiple Choice

A thin-walled spherical tank has a diameter of 0.75 m and an internal pressure of 20 MPa. The yield $20 \mathrm { MPa }$ stress in tension is 920 MPa, the yield stress in shear is 475 MPa, and the factor of safety is 2. $475 \mathrm { MPa }$ of elasticity is 210 $\text { GPa, }$ Poisson's ratio is 0.28, and maximum normal strain is $1220 \times 10 ^ { - 6 }$ The minimum permissible thickness of the tank is approximately:

• A) \(8.6 \mathrm {~mm}\)
• B) \(9.9 \mathrm {~mm}\)
• C) \(10.5 \mathrm {~mm}\)
• D) \(11.1 \mathrm {~mm}\)

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Definitions:

Tire Pressures

The measure of air pressure within a tire, typically measured in pounds per square inch (PSI) or bar, important for vehicle safety and efficiency.

Normal Distribution

A probability distribution that is symmetric about its mean, indicating that data near the mean are more frequent in occurrence.

Chi-squared Distribution

A statistical distribution characterized by degrees of freedom, used in hypothesis testing for categorical variables and in determining chi-squared test results.

Confidence Intervals

A numerical interval, associated with a specific likelihood, expected to encompass the actual value of an unidentified population statistic.