Multiple choice

A thin plate of uniform thickness is subject to pressure as shown in the figure below:

Under the assumption of plane stress, which one of the following is correct?

  1. Normal stress is zero in the z-direction.

  2. Normal stress is tensile in the z-direction.

  3. Normal stress is compressive in the z-direction.

  4. Normal stress varies in the z–direction.
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A Correct answer
Explanation

Correct option is (1). From the figure it is clear that normal stress is zero in the z-direction.

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