Question

A material with a yield stress of 70MPa70 \mathrm{MPa}70MPa is subjected to three principal (normal) stresses of σ1,σ2\sigma_1, \sigma_2σ1​,σ2​ and σ3\sigma_3σ3​, where σ2=0\sigma_2 = 0σ2​=0

Answer 1

A material with a yield stress of 70MPa is under a state of stress where one of the normal stresses is zero, indicating a pure shear stress situation.

Step-by-step explanation:

When a material with a yield stress of 70MPa is subjected to three principal stresses, one of which is 0, it means that the material is under a state of stress in which one of the normal stresses is zero.

This can occur, for example, in a situation where the material is experiencing pure shear stress.

In this case, the material is being deformed only in shear and not in any other direction.