Question

in case of tangential stress,the strain is given by the relative displacement between the top and the bottom phase .in that case the strain must be equal to costheta right

Answer 1

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Stress and strain relations are usually given by hooks law

Stress – Strain Relations: The Hook's law, states that within the elastic limits the stress is proportional to the strain since for most materials it is impossible to describe the entire stress – strain curve with simple mathematical expression, in any given problem the behavior of the materials is represented by an idealized stress – strain curve, which emphasizes those aspects of the behaviors which are most important is that particular problem.


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