This Java applet is used to draw any Mohr's circles for 3D stress analysis, given any set of stresses : sigma_x, sigma_y, sigma_z, tau_xy, tau_yz, and tau_xz.
The three small windows at the bottom should be typed in with the six stress components: sigma_x, sigma_y, sigma_z, tau_xy, tau_yz, and tau_xz, respectively.
After the data for the Mohr's circles are input, press the button "Draw", then the Mohr's circles can be created; press the button "fill", the Mohr's circles are created and filled with red colors. If the Mohr's circles are too small, press the button "size 1" or "size 2" to enlarge them. Whenever the data for the Mohr's circles are modified, press "Draw" or "fill" button to get modified Mohr's circles. Besides, the paramters for the Mohr's circles and calculated principal stresses and maximum shear stresses are given too.
Note that the origin of the coorinates is given in the form of O(n, 0). Read the number on the sigma axis and add it to the n to get the final result (multiplied by the scalar).