Mohr's Circle does y-axis = max strain or max strain/2?

[claraberner]

This isn't a problem assignment per-say, but for a lab calculation. In my mechanics of material's class, we learned that the radius of Mohr's circle is the maximum strain, but now in my application lab-based class, the video is saying the radius is equal to the maximum strain divided by 2. So which one is correct? Is there perhaps a different circumstance for theoretical verses application?

 

[Chestermiller]

What are your equations for the normal strain and shear strain on a specified plane, given the principal strains in the x and y directions

 

[claraberner]

What are your equations for the normal strain and shear strain on a specified plane, given the principal strains in the x and y directions

Hello, I think I figured it out: one mohr's circle is plotted with x being normal strain and y being shear strain, and the other plot is the one I am used to: the shear stress on the y-axis and normal stress on the x-axis. So now all the equations make sense to me.