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Strength of Materials

Elastic Constants

In a body loa...

Question

In a body loaded under plane stress conditions, what is the number of independent stress components in order to completely specify the state of stress at a point ?

A

3

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B

4

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C

6

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D

9

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Solution

The correct option is A 3
In a body loaded under plane stress conditions (2D), the number of independent stress components is 3 i.e. two normal components and one shear components. However in a 3D stress
condition, there will be 6 independent stress components i.e 3 normal components and 3 shear stress components.

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