For the beam and loading shown below,
(a) find the state of stress at point A in the Cartesian coordinate system indicated in the figure.
(b) use Mohr’s circle to determine (i) the principal stress and principal plane; (ii) the normal and shearing stresses acting on a plane oriented at 45 deg indicated in the figure.
The Attempt at a Solution
for part b, let me define the mohr's circle be like this:
Why not transform to point D but point B in the solution?
I think as the plane rotate 45 deg clockwise, so the point would follow point x then rotate 90 deg clockwise to point D i written.
So may I know if the answer is right for point B as the destination point, or should point D i written be right?