From the sketch, we can see that the shear stress on the y face rotates the element clockwise; therefore, the point is plotted above the σ axis.
Plot the state of stress acting on the y face. Label this point y.
From the sketch, we can see that the shear stress on the y face rotates the element clockwise; therefore, the point is plotted above the σ axis.
Plot the state of stress acting on the y face. Label this point y.